For San Diego center fielder Cameron Maybin, his season of disappointment continues to get worse.

Just five games into his rehab assignment with the Triple-A Tucson Padres, Maybin re-aggravated a left knee injury while running out a groundball hit to the shortstop eight days ago in a 3-0 loss at Nashville.

"I may have tried to come back a little too early," Maybin said Tuesday night before the Padres' 13-6 victory over Oklahoma City at Kino Stadium. "I was trying to get back on the field; it's been a disappointing year as far as me not playing.

"I take pride in playing a lot of games ... but I'm looking forward to the future and getting the knee right."

Maybin suffered damage to his posterior cruciate ligament in his left knee when he dived for a fly ball to the warning track against the Colorado Rockies on June 9. The San Diego regular has only played in 14 games this year after averaging 142 games the previous two seasons.

When Maybin started his rehab with Tucson on July 31, he said he felt good enough. At least until he tried to "bust it up the line" against Nashville, when some soreness and discomfort came back.

"(I'm) just trying to take it day-to-day and do the right things to make sure when I step back on the field again I'm healthy and hopefully there won't be any more setbacks," he said.

Maybin, 26, participated in batting practice but didn't play in Tucson's win Tuesday. Before missing the past six games, Maybin had one hit in his 10 at-bats, a home run straight into the Memphis Redbirds' bullpen.

Tucson manager Pat Murphy said he doesn't know how serious the re-aggravation is, but Maybin is "still working out with us, so it's a good sign."

San Diego general manager Josh Byrnes told the San Diego Union-Tribune on Tuesday that the Padres have pulled Maybin off his rehab assignment to let the left knee recover.

While a right wrist injury forced the former first-round pick to miss 46 games earlier in the season, a knee injury produces bigger problems because of outfielder's playing style.

"It's a big part of my game, you know what I mean, and if I don't have my legs that's a problem for me," Maybin said. "That limits a lot of the things that I'm able to do. I just got to be patient with it."

Maybin, a career .248 hitter in seven MLB years, stole 40 bases in 2011, tying him for second in the National League. He's a strong defensive player, using his quickness to track down fly balls.

"It's all a part of my game," Maybin said, "and if I'm not running well, I'm not helping anybody."

¡Tus Padres!

Tucson 13, Oklahoma City 6

  • Highlight: The opportunistic Padres (65-59) jumped out to a 5-2 lead in the first inning and survived a shaky outing by starter Matt Andriese to beat the RedHawks (69-55) at Kino Stadium. Oklahoma City tied the game in the fourth, but Tucson regained the lead on back-to-back doubles by Chris Robinson and Reymond Fuentes to start the fourth. The Padres bullpen allowed one run through five innings, with reliever Jorge Reyes picking up the win.
  • Big number: 5: Tucson has won five straight games for the first time since late June.
  • Tonight's starters: RHP Burch Smith (4-1, 2.93 ERA), Tucson, vs. RHP Bobby Doran (1-0, 5.03 ERA), Oklahoma City