© 2009 MLB Advanced Media, L.P. All rights reserved.

09/24/09 1:17 AM ET

Richard has had his ups and downs

San Diego (70-83) at Colorado (86-66), 5:40 p.m. PT

DENVER -- What should be expected from Padres pitcher Clayton Richard in Thursday's series finale against the Rockies?

Richard, the left-hander who makes his 11th start of the season since being picked up from the White Sox in the Jake Peavy deal, has been hot and cold since making his first start with the team on Aug. 1

Richard was very good in his last start on Sept. 19 against the Pirates as he allowed one unearned run over six innings of a 2-1 victory. He walked three and struck out five.

The Padres are 7-3 in games Richard has started.

"Those are the types of games as a pitcher that you like to pitch in," Richard said after the game against the Pirates. "Knowing that you can give your team a chance. I was a little erratic at the beginning and then I calmed down. I got a cutter going pretty effectively and was really around the plate.

"After the first inning, the defense played real well."

Richard has had seven starts with the Padres where he's allowed three or fewer runs and three more where he's allowed four or more, including two starts where he allowed six runs.

"I thought Clayton did a good job of utilizing his changeup and getting back into counts and getting outs," Padres manager Bud Black said. "He really made some pitches to the middle of their order that needed to be made. He pitched well and then obviously the bullpen did a nice job."

After Thursday, Richard will likely make one more start before the end of the regular season. That start will likely come on Sept. 29 against the Dodgers at PETCO Park.

Pitching matchup
SD: LHP Clayton Richard (8-5, 4.69 ERA)
Richard will be making his 11th start since being acquired from the White Sox. In his last start, Richard and Pittsburgh right-hander Ross Ohlendorf hooked up for a tight pitchers' duel, but neither was around for the decision in a 2-1 San Diego victory at PNC Park on Saturday. Richard pitched six innings and allowed one unearned run on four hits in the start.

COL: RHP Jason Hammel (9-8, 4.35 ERA)
Hammel has a shot to join Jorge De La Rosa, Ubaldo Jimenez, Jason Marquis and Aaron Cook as Rockies starters to post a double-digit win total this season. Hammel should have done it before now, considering his mostly solid work. He earned the elusive ninth win on Saturday at Arizona. He held the D-backs to three runs and four hits in seven innings. The game was close until the late innings, when the Rockies pulled away for a 10-4 victory.

It looks as if utilityman Edgar Gonzalez will miss a few games after suffering a partial dislocation of his left shoulder. Gonzalez suffered the injury trying to make a diving grab of a fly ball off the bat of Clint Barmes in the seventh inning of Tuesday's 11-10 loss to the Rockies. Barmes ended up with an inside-the-park home run and Gonzalez left the game. He was able to pop the shoulder back in and won't miss more than a handful of games. It's something that happened to Gonzalez in the Minor Leagues and when he was playing at San Diego State. ... There's been no change in the tightness in the back of third baseman Kevin Kouzmanoff, who has now missed the Padres' past 13 games, first with a left calf strain and then tightness in the back. Chase Headley continues to play third base in his place and is hitting over .300 while filling in. Headley is a third baseman by trade who was moved to the outfield prior to the 2008 season.

 Buy tickets now to catch the game in person.

On the Internet
 Gameday Audio
•  Gameday
•  Official game notes

On television
• 4 San Diego

On radio
• XPRS 1090, XEMO 860 (Español)

Up next
• Friday: Padres (Kevin Correia, 11-10, 4.08) at Diamondbacks (Max Scherzer, 9-10, 4.08), 6:40 p.m. PT
• Saturday: Padres (Wade LeBlanc, 2-1, 3.93) at Diamondbacks (Dan Haren, 14-9, 2.90), 5:10 p.m. PT
• Sunday: Padres (Edward Mujica, 3-4, 3.77) at Diamondbacks (Billy Buckner, 2-6, 6.75), 1:10 p.m. PT

Corey Brock is a reporter for MLB.com. This story was not subject to the approval of Major League Baseball or its clubs.