The need for a reliever came about when Nathan Eovaldi, the Yankees' starter last night, left the game after one inning with an elbow injury. The team went on to use seven different relievers in their 9-4 defeat of the Boston Red Sox.
A corresponding move for Heller has not been announced.
The 25-year-old Heller was acquired, along with a package of prospects, by the Yankees at the trade deadline when they shipped Andrew Miller to the Indians.
He has made 46 appearances this season, spending time at Double- and Triple-A. Heller has gone 3-2 with a 1.60 ERA and a 52-13 strikeout-to-walk ratio in 45 innings pitched, saving 13 games. He projects to be a back-end relief pitcher in the big leagues.
Heller's arsenal mainly consists of a blistering 100 MPH fastball and a wipeout slider. He was drafted by the Indians with their 22nd round pick in the 2013 MLB Draft out of Olivet Nazarene University.
For more on Heller, be sure to read this profile I did on him in June.