Yankees fireballer Joba Chamberlain will make his long-awaited debut as a starter on Tuesday. He will be limited to 70 pitches. The entire East Coast media will be drooling.

Pedro Martinez will also make his long-awaited return to the Mets’ rotation Tuesday. Pedro claims that the Mets clubhouse would have been looser if he had been around. Let’s hope he can be awesome and injury free for the rest of the season, because who wouldn’t want to watch just a little bit more acery from one of the most entertaining pitchers of our generation?

No. 1 prospect in America Jay Bruce had 4 more hits on Friday, raising his batting average in his first 4 games to .571. That the Reds not only went out and sign Corey Patterson this winter specifically to block Bruce, but then stuck with him in the leadoff spot, for two whole months, despite his .200 average and his execrable .240 OBP, can only be taken as a searing indictment of Dusty Baker and departed GM Wayne Krivsky, and anyone else in the Reds organization who could have stepped in and put a stop to the madness. Bruce had nothing left to prove in the minor leagues since more than a year ago, and should have been starting in centerfield for the Reds on opening day.

Steeply declining Indians DH Travis Hafner has been put on the DL for generalized suckiness (officially, a “sore shoulder”). Hafner’s bat has fallen off a cliff the last two seasons, beyond what a mere sore shoulder can explain. He may not be truly this bad, but I think it is safe to say that the Indians are going to be regretting signing him to an extension through 2012 for years to come.

Red Sox ace Daisuke Matsuzaka will go on the DL with a strained rotator cuff, missing at least one start if not more. This means an encore performance of the Justin Masterson show. Everyone is talking about how all signs are as good as can be on Matsuzaka’s shoulder, but I don’t know if there can really be “good signs” when we are talking about some sort of rotator cuff problem.

The Carlos Gonzalez era has officially begun in Oakland, where the organization’s top prospect was called up on Friday and quietly got off to a fine 2 for 3 start, amid much less fanfare than that surrounding the callups of Bruce or Clayton Kershaw. I’m not sure if he’s really ready to hit in the Majors – his AAA stats still showed he has some issues with commanding the strike zone – but with Ryan Sweeney going on the DL, the A’s needed someone to play centerfield, and Gonzalez’s plus defense and rocket arm, at least, will play immediately.

Even less fanfare attended the Cardinals’ decision to call up outfielder Joe Mather, and surprisingly, send down Chris Duncan, who hadn’t exactly been sucky. It was already ridiculous how many talented young outfielders the Cardinals have all of a sudden, what with Ducan, and Rick Ankiel, and Skip Schumaker, and Ryan Ludwick, and Brian Barton. You can now add Mather to that list, as he already made a spectacular diving catch in his first game up, and he might have to be on your fantasy radar having already slugged 12 homers and posted a 1.077 OPS so far at Triple-A this season.

Rumors are starting to heat up again about Kenny Lofton possibly catching on with a big league team at last. Despite hitting .296 with 7 homers and 24 stolen bases last season, Lofton has yet to find a taker for his services this year. His defense has declined to the point where he should no longer be an everyday starter, and he can no longer hit left-handed pitching, but he can still put up strong numbers vs. right-handers and should be able to find a place on somebody’s roster as a part-timer. The Cubs and Mets continue to be rumored as destinations, and Lofton would make some sense for both squads. But in my view this is just people stirring up rumors as there has been no credible evidence that either team is willing to sign Lofton. But with lefty stick, ability to hit for average, and still-dangerous speed, it makes no sense that Lofton doesn’t at least have a role as a bench player when people like Mark Sweeney still have major league jobs.

I do try to control my raging Boston homer impulses here on UmpBump, but there’s only so much a girl can do. I’ve just got all these BoSox-centered thoughts rattling around in the old bean, and I’ve got let some of them out! But if you stick it out for a few paragraphs, there will be some assorted MLB-wide random thoughts towards the end.

Curt Schilling may be an opinionated guy, but he’s not afraid to admit when he’s wrong. He played catch yesterday, after what he described as his longest period without throwing a ball since he was five years old. And he admitted that the course of rehab recommended by the Red Sox doctors—which he fought tooth and nail—is working. And the weight bonus has been dropped from his contract. Bartolo Colon is pitching for Pawtucket on Saturday. And yesterday, Boston’s other old man, knuckleballer Tim Wakefield, threw 8 innings of shut-out ball in Detroit. Good times for Boston’s venerable hurlers.

Gordon Edes (still at the Boston Globe, at least for the time being) had a quick observation about Julio Lugo:

Julio Lugo began the day ranked at the bottom of all defensive categories for big-league shortstops. He had the most errors (9), the lowest fielding percentage (.919), was last in assists per nine innings (2.36), and last in range factor (3.49). The rest of the Sox infield? Mike Lowell, Sean Casey, and Dustin Pedroia have one error apiece, Kevin Youkilis none. Most of Lugo’s errors have come on routine plays, an indictment of his fundamental skills more than his athleticism…

This jibes with what I’ve been observing. Lugo gets to the ball and then bobbles it, or lets it go under his glove, or even snags it and then throws it away. It just seems like he’s not focused, as if he’s thinking too many steps ahead instead—he looks like he’s taking his eye off the ball when it’s coming to him and then getting rid of it before he gets his feet under him. Basic stuff. Lugo has called himself an aggressive shortstop and has admitted that sometimes, his enthusiasm results in mistakes. I wish he’d get a little more Zen-master-like focus.

Anyway, compare Edes’ observation, above, with this sentence from Nick Cafardo, the man who took over the Sunday Notes column from him:

Is there a shortstop alive with more range than the Angels’ Erick Aybar (please, no “range factor” stats)?

Ugh. For the record, Erick Aybar is leading MLB shortstops in range factor this season. He’s 13th in fielding percentage. Or, if you’re Nick Cafardo, in “‘fielding percentage’ stats.” Cafardo also interviewed Johnny Damon, who sounds like a bit of an ass:

You’re 34 years old with more than 2,100 hits. Do you ever think about playing a long time and getting 3,000 hits and possibly making it to the Hall of Fame?

JD: “I’m starting to think about it. I never thought about it because it’s a team game and there are so many pitches I took to try to work the pitch count to make it easier on people like [David] Ortiz, Mike Sweeney, and Manny [Ramírez]. I mean, what if I just swung and got the hits and all the times I played when I shouldn’t have to make sure other guys stay fresh? If you think about that over seven or eight years, how many would I have had? I’m starting to think about it more.”

Apparently, Johnny Damon could have had a lot more hits by now, if he hadn’t been trying to selflessly help the team. (Whaaa?)

At a recent game in the Fens, we were sitting right behind the Boston bullpen. We watched Hideki Okajima rub the parrot for good luck before the game. We watched Julian Tavarez flirting with the girls seated next to us. Billy the bullpen cop saw an adorable little boy walk up to the metal fencing and peek down into the pen; Billy got Jonathan Papelbon to walk over to the fence and say hi. The little boy’s eyes widened to the size of catchers’ mitts. We saw the guys trying to throw pumpkin seeds into a plastic cup. (Only one seed went in, by my count, but some unseen hand was throwing those seeds with a lot of great, biting movement on ‘em. It would really dive in against a righthanded hitter, with good downward break as well. Wonder who that was?)

Boston’s now enjoying a 4-game lead for first place in the AL East. The Rays are 4 back, the struggling Yanks and the Jays a game behind them, and the Orioles are back in the cellar where they belong.

Other MLB randomness:

Have you ever noticed how Placido Polanco has a head like a midget? It’s a midget-shaped head on a regular-sized body. Strange.

Barry Zito will return to the starting rotation without making any appearances out of the bullpen. This seems less like a return to sanity on the part of San Francisco management than like they utterly and completely lack for any sort of plan, at all. But then, we knew that.

The players’ association is investigating suspicions of collusion regarding unsigned veterans like Kenny Lofton and Barry Bonds. But old is old and indicted is indicted, no?

MLB looked into the blow-up doll incident in the White Sox clubhouse and decided it was a “team issue.” GM Ken Williams has been assured by Ozzie Guillen that it won’t happen again. Yet the skipper has told the press he sees nothing offensive, immature, or otherwise pathetic with having lewdly positioned blow-up dolls in the clubhouse because it’s a clubhouse, and what happens in the clubhouse should stay in the clubhouse because it’s the clubhouse, goddammit, and if grown men want to play with dolls in their clubhouse than that’s their clubhouse-given right! Clubhouse. (Note to self: rename office cubicle “the clubhouse;” purchase opium; hire harem boys; acquire a quantity of mead, one of those roasted pigs with the apple stuck in its mouth, and a cake; send Outlook invites for Friday afternoon orgy.) Now, it should be noted that there was, at one point, a naked blow-up doll in my freshman year dorm room. I have no idea how it got there, but one day I woke up and saw it, lo and behold, perched atop my roommate’s wardrobe. And a couple of months later, it vanished. I offer this anecdote just by way of saying, random and tasteless blow-up dolls could happen to anyone, anywhere, at any time.

Most of the big free agents are off the board, but there are still some compelling names out there and rumors about impending trades persist.

Let’s take a look at some of those rumors:

1. Kenny Lofton to the Rangers. Lofton is an enigma. He’s a formerly elite player who used to be the best leadoff guy in the game. Now? He’s still pretty good. The last two seasons he’s been a reliable force at the top of the order for both the Phillies and Dodgers. Rumor is that Lofton is about to sign with the Rangers. He was asking for $6 million for one season. That’s a lot of money to pay a guy with history of injuries. On the other hand, he’s been relatively healthy the last two years and is good for .300, 40 RBIs and 30 stolen bases.

Let’s put it this way: the Phillies just traded two top prospects for Freddy Garcia, who will make $10 million this year, is in the final year of his contract and is essentially a one-year rental. Lofton won’t cost the Rangers a single prospect, just money. And he’ll bring stability to the outfield and the top of their order. So maybe $6 million isn’t so sillly.

2. Roger Clemens to the Red Sox. The possibility of Clemens signing with the Sox seemed remote when it looked like the Sox were going to sign Matsuzaka. But now it seems the world’s best pitcher will be heading back to Japan for at least one more year. So the Sox all of a sudden have an opening on their staff.

The other teams in the running for Clemens? It’s hard to imagine Roger will sign with the Astros again, after his buddy Andy Petitte bolted Houston. Plus, the ‘Stros just don’t look like they’ll be very good in 2007. That leaves the Yankees. It’s been said Clemens will be more likely to sign with the Yankees now that Petitte has returned to the Bronx. But I suspect Clemens would value the opportunity to pitch against his friend almost as much as he would enjoy pitching with him. So if I had to guess, I’d say Clemens will be a Sox come June.

Still, the Yanks would have a spot for Clemens if they manage to unload Carl Pavano. And speaking of Pavano…

3. Carl Pavano to the Cardinals. Newsday is reporting that the Cardinals have asked to see Pavano’s expansive medical records. Could the redbirds really be interested in taking the oft-injured pitcher off the Yankees hands? The World Series champs do need starting pitching, especially if they lose both Jeff Weaver, Mark Mulder and Jeff Suppan in free agency.

The Yankees probably wouldn’t ask for much in return for Pavano — just that the Cardinals take over responsibility for most of his salary. Come to think of it, that is a lot to ask.