The A.L. Closer Report: 5/6

For the purposes of the “Closer Report” (which will be a weekly feature), we’ll place the relief aces in one of three categories: Death Grip (these guys have no chance of relinquishing the closer’s role; think Mo Rivera), In Control (a good chance of continuing to rack up the saves) and Watch Your Back (the set-up man is planning a coup d’etat as we speak).

Death Grip

Mariano Rivera, Yankees

With 13 whiffs and no walks, Mo has been his typically dominant self. He’s given up 2 homers in 9.2 innings (half of his total in each of the past two seasons), but there’s no cause for concern here.

Jonathan Papelbon, Red Sox

Papelbon just hasn’t quite been himself this season: he’s issued 7 walks in 12 innings, just one fewer free pass than he gave up in 69.1 IP in 2008. Opposing batters seem content to wait Boston’s closer out, swinging at 47.5% of his pitches thus far (55.6% in 2008).

Kerry Wood, Indians

Wood is racking up the K’s (16 in 10 IP), but he has also walked 5 and owns a -0.14 WPA. As with Papelbon, opponents are keeping the bat on the shoulder more often as Wood works out his control kinks: his outside swing percentage (31.3% last year) is just 19.7% in 2009. Cleveland’s ‘pen has been as prone to fluctuation as any unit in recent memory, and ’09 has been a down year: Indians relievers own the third worst WPA mark in the big leagues, at -2.89.

Joakim Soria, Royals

Soria returned from bout with shoulder soreness to complete a five-out appearance on May 2nd against the Twins. He racked up a save the following night, and now boasts a 1.62 FIP in 7.2 innings.

Bobby Jenks, White Sox

6-for-6 in save ops, Jenks has an 8/4 K/BB in 9 innings pitched. His fastball velocity is up a tick from 2008 (from 93.8 to 94.8), though his outside-swing% is down for the third straight season (29.9% in ’07, 28.3 in ’08 and 23.5 in ’09).

Joe Nathan, Twins

Nathan has served up a couple early-season dingers, but he’s been his usual stellar self. Nathan’s low-to-mid-90’s heat and sharp high-80’s slider have gotten batters to chase pitches outside the strike zone 35.5% of the time (24.4% MLB average), which ranks in the top 10 among all relievers.

Frank Francisco, Rangers

Francisco has been untouchable in 2009: 8-for-8 in save chances, Francisco has yet to be scored upon in 13.2 innings of work. His 1.82 WPA leads all relievers, and he’s inducing outside swings at a higher rate than in recent years (30 outside swing%; 22.3% career average).

In Control

Brad Ziegler, Athletics

Battling the flu, Ziegler made his first appearance since April 25th last night (hey, it beats pulling your calf). With all the maladies afflicting Garciaparra, Chavez, Ellis and Casilla, among others, I’d bring my own shaman to the ballpark if I were an Athletic. Ziegler struck out two in a scoreless inning against the Angels last night, and has not surrendered a run in his last 8.1 innings pitched.

David Aardsma (Brandon Morrow on DL), Mariners

Morrow hit the DL with biceps tendinitis, but he’s expected back during the weekend or early next week. Aardsma gets the call until then. The erstwhile Cub, Giant, White Sock and Red Sock has shown why teams continue to be intrigued by his hard fastball/slider combo (11 K in 12. IP), but also why so many clubs have given up on him (8 BB).

Brian Fuentes, Angels

Fuentes is missing bats (13 K in 9.2 innings), and his FIP is an adequate 3.70. However, a mind-warping .457 BABIP has made the new Angels stopper look like a punching bag (6.52 ERA). Not that everything is hunky-dory: he’s located just 44.3% of his pitches for strikes (52.3% career average), which helps explain the four walks.

Scott Downs, Blue Jays

Downs is doing everything in his power to keep the ninth-inning glamour role for good. In 15.1 frames, he has a ridiculous 20/0 K/BB ratio, and he’s been scored upon just twice. His FIP is 0.77, with a near-70 percent groundball rate. Hitters are flailing at Downs’ sinker/curve mix, with a 38.5% outside-swing% that ranks 6th among all relievers.

Watch Your Back

George Sherrill/Chris Ray/Jim Johnson/Danys Baez(?), Orioles

Sherrill is officially on the ropes as Baltimore’s stopper, not a shocking development given his 2 blown saves and 3 dingers allowed in 11.2 frames. Ray, toting mid-90’s cheese and a mid-80’s slider, has whiffed 10 batters in 8.1 frames, though he’s also walked 4 (3 unintentionally).

Johnson (0.62) and Baez (0.42) rank one and two in terms of Baltimore WPA, though Baez is said not to be a candidate at the moment. Mostly a high-priced disaster with the O’s, Baez has a 13/5 K/BB ratio in 15.2 innings this year. Johnson, meanwhile, continues to post mediocre peripherals while posting superficially impressive ERA’s (2.45 ERA, 4.45 FIP in 2009).

Troy Percival, Rays

Percival racked up just about the easiest save he’ll ever get yesterday, retiring one Orioles batter. The 39 year-old has worked just 7.2 innings in 9 appearances, throwing less than a full frame on three occasions.

Fernando Rodney, Tigers

Would you believe that Rodney (he of 4.43 career BB/9) actually leads all relievers in first-pitch strike percentage, at 82.1%? The typically combustible flame-thrower has tossed 60.7% of his pitches within the strike zone (fourth among all relievers), and he’s walked just one batter in 10 innings. Rodney has surrendered 5 runs, but with a 3.38 FIP (the lowest of his career), he really hasn’t been half bad.