The Seattle Mariners aren't sure if Felix Hernandez will take his next turn in the rotation after he struggled through one of the worst losses of his career on Tuesday.

Hernandez allowed 11 runs -- seven earned -- in six innings against the Texas Rangers.

"We'll see," Scott Servais said when asked if the right-hander would start on Sunday against the Houston Astros. "You have to take a look at where we're at going forward here. The next time that spot [in the rotation] comes around, we'll be over in Houston. They've also got a good club.

"We've got to give ourselves a chance every time out there to win the ballgame. It's tough to win."

Hernandez, 32, has a career-worst 5.73 ERA in 23 starts this season and a 7.85 ERA in his past six starts.