However, "we've got to surround Kyle with a lot more,'' Cashman said. "I'd just like to improve our pen ... and to feel good that we have a legitimate chance going forward to compete in the AL East and beyond.''
Rivera has won back-to-back Rolaids Relief Man awards as the top-rated AL closer, but the Yanks need to be deeper and more diverse. Primarily, they require a situational lefty who can face the opposition's big lefty hitter in a key seventh- or eighth-inning spot.
A trio of 35-year-old free agent left-handers have attracted the Yankees' attention: Mike Myers, Ricardo Rincon and Joey Eischen.
Over the past three seasons, Myers held lefties to a .208 batting average (.278 on-base percentage). Rincon has kept lefties to a .217 mark (.276 OBP) during that same period, while lefties are batting .242 (.308 OBP) against Eischen.
But in the past three seasons, Eischen has the better strikeout-to-walk ratio (87 K, 40 BB), compared with Rincon (107-74) and Myers (74-57).
The Yankees also are keeping tabs on right-hander Julian Tavarez, 32, another Boras client. Failing the addition of another impact right-handed reliever, Jaret Wright, who has two years left on his contract, is a candidate to join a bullpen that includes Tanyon Sturtze and Aaron Small.