(All stats through April 30.)<br><br>Johjima, the 31-year-old catcher from Japan, enjoyed great success during his first two seasons in MLB, during which he averaged 16 home runs and a .289 batting average. This year, however, he has yet to produce, with just one home run and only 5 RBIs to go with his .177 average as of April 30.
2 of 19Al Tielemans/SI
Over the past two years, Phillies fans have seen Ryan Howard lift 105 home runs out of the yard, but they are hard-pressed this year to find that same offensive production as their star slugger was mired in a 2-for-24 slump, which had dropped his averages to .172/.297/.343.
3 of 19Fred Vuich/SI
With A-Rod and Jorge Posada on the 15-day DL, the Yankees are looking for their other players to step up. Unfortunately, their young All-Star second baseman is hitting just .151 and has driven in only seven runs.
4 of 19Scott Rovak/SI
The momentum during the Rockies improbable run at the World Series apparently has not carried over into this season for Tulowitzki. He is well below the Mendoza line, hitting just .152, down from .291 last year.
5 of 19Al Tielemans/SI
Perhaps Zimmerman spoiled Nationals fans last year. At the tender age of 22, he hit 24 home runs and drove in 91 runs. He has only three home runs and a measly .233 batting average heading into May.
6 of 19Larry Goren/Icon SMI
The Dodgers acquired him primarily for his great defense in centerfield, but they were hoping he could also bring some of his hitting skills. Jones, who hit 51 home runs just three years ago, has hit just one dinger in his first 27 games and is hitting .159.
7 of 19Chuck Solomon/SI
Coming off a solid campaign in which he hit 33 home runs, drove in 112 runs and stole 23 bases, Beltran has just two home runs this season and is hitting .211 with only two swipes.
8 of 19Andy Lyons/Getty Images)
The left fielder has been hit or miss throughout most of this season. He has 9 hits and 8 strikeouts in his last 10 games. On the season, Dunn is hitting just .224 and has only four homers.
9 of 19Damian Strohmeyer/Sports Illustrated
10 of 19Aaron M. Sprecher/Icon SMI
Known for his great control and consistently, the Houston Astros ace managed just two wins in his first six starts and had given up 46 hits in his 36 innings of work, resulting in a 5.75 ERA.
11 of 19Brad Mangin/SI
The Giants' major free-agent signing of 2006 has yet to prove he is worth the seven-year, $126 million contract he was given. The 2002 CY Young winner is off to a 0-6 start with a 7.53 ERA and has temporarily lost his starting job.
12 of 19Andy Altenburger/Icon SMI
The preseason favorite to win it all, Detroit is off to a slow start. Part of the problem has been uncharacteristically poor pitching performances from ace Verlander, who is just 1-4 with a 6.50 ERA. He had a brilliant 18-6 season last year.
13 of 19Fred Vuich/SI
Last year's AL CY Young winner has an abysmal 1-4 record and 7.88 ERA. After walking just 37 batters in 241 IP in '07, he already has 17 walks in 32 innings in '08.
14 of 19Al Tielemans/SI
Coming off the best season of his career (15-8 record with a 3.83 ERA), Lilly is 1-4 with a 6.46 ERA this year.
15 of 19Guang Niu/Getty Images
Baseball's all-time leader in saves has struggled to add to his career total recently. He has blown two saves, including one stint in which he gave up four runs in 2/3 of an inning. He's 0-2 with a 6.52 ERA.
16 of 19Dilip Vishwanat/Getty Images
Despite leading the NL in saves with nine as of April 30, Izzy has fizzled for much of this year. His bloated 6.00 ERA is more telling of how he has struggled, including a blown save on April 25, when he gave up three earned runs in one inning.
17 of 19Scott D. Weaver/Icon SMI
He's battling through a 7-for-51 slump and has a .302 OBP, down from the .439 he had in 2006.
18 of 19Andy Altenburger/Icon SMI
The DH of the slumping Tigers has just two home runs in his first 20 games.
19 of 19Chuck Solomon/SI
After Carlos Delgado dropped from 38 to 24 home runs over the past two seasons, Mets fans were hoping he would rebound by having a solid year. However, his start to the season has been troubling, given his paltry .198 batting average and 20 K's in the first 26 games of the season.
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