DENVER (AP) Colorado Rockies veteran Rafael Betancourt has been designated for assignment, possibly signaling the end of the right-hander's 11-year major league career.

In a corresponding move, Colorado selected the contract of right-hander Simon Castro from Triple-A Albuquerque. The Rockies also recalled right-hander Jairo Diaz and optioned reliever Justin Miller to the Isotopes.

Betancourt, 40, was 2-4 with one save and a 6.18 ERA in 45 appearances this season. He joined the Rockies in a trade with Cleveland in 2009 and helped the team reach the playoffs that season.

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He has been with Colorado since and has 58 saves, fifth in franchise history.

He didn't pitch in 2014 after undergoing Tommy John surgery in September 2013. He signed a minor league contract with Colorado in January and made the team out of spring training.

The Rockies also announced they reinstated reliever Brooks Brown from the 15-day disabled list and optioned him to Albuquerque.