SEATTLE -- Ross Ohlendorf will become the 12th starting pitcher the Padres have used when he takes the ball on Saturday in Oakland.

Ohlendorf, who signed a Major League deal with the team on June 4, tossed 4 1/3 innings in a piggyback role after Andrew Cashner started for the Padres on May 9 against the Brewers.

Ohlendorf (1-0) got the victory that day, allowing one run on five hits with two walks and four strikeouts.

The Padres used Cashner's start that day as a springboard to him getting stretched out in the Minor Leagues, with intentions on putting him in the rotation.

Cashner is now with Double-A San Antonio, so Ohlendorf gets a chance to start for the Padres.

"He did fine. He's got some experience and he's been around the block and handled it well," San Diego manager Bud Black said of Ohlendorf, who made 10 starts for the Red Sox's Triple-A affiliate before opting out of his contract on June 1.

Several pitchers who have started games for the Padres this season are on the disabled list -- Cory Luebke, Tim Stauffer, Joe Wieland, Dustin Moseley and Eric Stults.

Balsley wants Bass to avoid disaster inning

SEATTLE -- To be clear, Padres pitching coach Darren Balsley said there's absolutely nothing wrong with Anthony Bass' mechanics or any of his pitches.

But Bass, who is 0-2 with a 8.14 ERA over his last four starts, is lacking something that Balsley would like to see more of moving forward.

"He needs to find a way to get through a crisis," Balsley said before Wednesday's game against Seattle. "It's nothing mechanical. It's a matter of getting over the hump where he's got to realize that a crisis is happening.

"It's knowing that you might give up one or two runs but you have to stay away from giving up four or five."

In his first eight starts, Bass was 2-3 with a 2.94 ERA. Opponents were hitting .228 against him. But in his last four starts, opposing batters are hitting .302.

Bass opened his last start against the Brewers with five scoreless innings before allowing four runs in the sixth inning.

"It always seems like it happens in the sixth inning for some reason," said Bass, who will make his next start on Friday in Oakland. "It's like those first five innings, I feel like I can pitch with the best of them."

Bass has found solace in knowing that he doesn't have to tinker with his mechanics or anything as far as trying to sharpen his command on a certain pitch or pitches.

He realizes that he needs to work out of a potentially messy situation before it becomes a real disaster.

"It's frustrating, but it's part of the learning experience. But up here, you can tell the guys who are good at executing a pitch to get a ground ball when they need it," Bass said.

Tull's group out of running to purchase Padres

SEATTLE -- Thomas Tull, the CEO of Legendary Pictures, has been told that his group is not among the finalists in the running to purchase the Padres, according to the Associated Press.

Tull had been endorsed by former Padres Hall of Fame outfielder Tony Gwynn. A spokesman for Tull declined comment.

It is believed that are at least five groups interested in purchasing the team from majority owner John Moores.

As of May 25, three groups had been approved by Major League Baseball to review the financial records of the Padres for possible purchase, Moores told MLB.com. Moores said that he expected that number to reach six before bidding on the team was complete.

On May 28, golfer Phil Mickelson, a San Diego native, joined the group that includes four grandchildren of former Dodgers owner Walter O'Malley in their pursuit of buying the team.

Short hops

• In his first start with San Antonio, Cashner allowed two runs on four hits with four strikeouts in 3 1/3 innings against Corpus Christi on Wednesday.

Cashner, who was optioned earlier in the week from the Padres to get stretched out as a starter, threw 52 pitches (33 strikes). He was 3-3 with a 3.81 ERA in 28 appearances for the Padres, with all but one of them being relief appearances.

He made his only start with the Padres on June 9 in Milwaukee and allowed one run on two hits in 2 1/3 innings with five strikeouts. There's no timetable for how long Cashner will pitch for the Missions.