With Garrett Richards out of the season, the Los Angeles Angels are kicking the tires on multiple veteran pitchers ahead of the waiver trade deadline Sunday.

Options include A.J. Burnett of the Philadelphia Phillies and Bartolo Colon of the New York Mets.

Richards was having the best season of any starting pitcher in the Angels' rotation. Jered Weaver, C.J. Wilson and Matt Shoemaker are in line to lead the team's playoff rotation, but the team is thin behind that threesome.

Colon, 12-10 with a 3.82 ERA, owns an $11 million salary for 2015 as part of a two-year, $20 million contract he signed with the Mets before the season, and Burnett can make $12 million in '15, but has discussed retirement. However, after a 12-strikeout, one-hit performance against Washington earlier in the week, Burnett sounded like he would reconsider.

"I guess you could say I've still got it when I do have it," Burnett said. "My decision will come down to how I feel and what my family and I decide. It's just one start, but to be able to go out and do that tonight makes you wonder."

Burnett was 0-6 with a 6.41 ERA in his previous seven starts.