24-year old righty starting pitcher Yusmeiro Petit has been truly awful this season. He has pitched in 21 games (17 starts) with the D-Backs this season and he is 3-10 with a 5.85 ERA and a 1.49 WHIP. In three years with the Diamondbacks Petit has pitched in 54 games (35 starts) in which he is 9-19 with a 5.06 ERA and a 1.32 WHIP. The Diamondbacks might look to trade Petit in the off-season as they seem to be running out of patience with him.

Wow.  That didn’t last too long!  The Diamondbacks saw Joe Kennedy 3 times and Byung-Hyun Kim twice and they saw enough of them to know that they didn’t want either of them around any more.  Kennedy pitched in 3 games for the Diamondbacks and he was 0-0 with a 20.25 ERA and a 2.25 WHIP.  He worked 2.2 innings for the D-Backs and he allowed 4 hits, hit 4 batters, walked 2 and whiffed 1.  Byung-Hyun Kim started 2 games and he was 0-1 with a 23.62 ERA and a 4.87 WHIP.  He only lasted 2.2 innings in his starts and he allowed a whopping 11 hits, 9 runs (7 earned), walked 2 batters and whiffed 3.  These moves are addition by subtraction for the D-Backs.

Doug Davis, Livan Hernandez and Edgar Gonzalez have not pitched up to their ability and the D-Backs need that to change in the 2nd half if they are to make a playoff run.  Lefty starter Doug Davis has really been awful this season.  He is 5-10 with a 4.26 ERA and a 1.75 WHIP so far this season.  He has allowed 126 hits and walked 59 batters in only 105.2 innings and that is quite incredible.  If he pitches that bad in the second half his ERA will likely rise to over 5.00 for the season.  Livan Hernandez is only 5-5 with a 4.54 ERA and a 1.60 WHIP so far this year.  He has allowed 135 hits and walked 49 batters in only 115 innings.  His ERA also will likely rise if he continues to give up that many baserunners.  Edgar Gonzalez started the season as the #5 starter but he lost his job to Micah Owings and it’s because of how he pitched.  Gonzalez is 3-2 this season with a 5.31 ERA and a 1.33 WHIP.

Brandon Medders is off to a horrible start this season for the D-Backs.  In 20 games, Medders is 1-1 with a 4.82 ERA and a 1.55 WHIP so far this season.  In 18.2 innings, he has allowed 20 hits, 8 homers and has walked 9 batters.  If Medders doesn’t pitch better soon he will wind up back in AAA ball.

The Diamondbacks have been looking for a quality left-handed reliever for a long time and that search might have finally resulted in finding a good one.  Doug Slaten has been excellent so far this season as he’s 2-0 with a 1.59 ERA and a 1.15 WHIP in 17 games.  In 11.1 innings this year, Slaten has allowed 10 hits, walked 3 batters and has whiffed 12.  Look for Slaten to continue to be successful because he has great stuff.