Interest in Colorado Rockies closer Rafael Betancourt is heating up with several teams with playoffs aspirations in pursuit of the right-handed reliever. Those teams include the New York Yankees, Oakland Athletics, Boston Red Sox and Baltimore Orioles, writes Troy Renck of The Denver Post, but several other teams in need of bullpen help could be a match.

The Angels, White Sox and Braves are also seeking relief help. Oakland has been fairly aggressive, and the Rockies could sweeten the pot by returning Triple-A starter Guillermo Moscoso to them.

The 37-year-old Betancourt is owed the remainder of his $4.25 million this year and holds a mutual option for 2013 at the same price.

So far, the veteran reliever has proven to be worth his salary, posting a 2.92 ERA across 37 innings of work for the Rockies. While his peripherals are solid as well (9.24 K/9, 2.43 BB/9, 0.73 HR/9), Betancourt's 37.4 GB% may make teams like the Yankees and Red Sox cautious.