Matthew Polinsky (born February 24, 1984) is an American color commentator, columnist, and retired professional wrestler. He is currently signed to WWE and works on WWE SmackDown, as well as WWE's developmental system NXT and 205 Live as a color commentator under the ring name Corey Graves. He is a former NXT Tag Team Champion with Adrian Neville. Polinsky is also known for his work on the independent circuit under the ring name Sterling James Keenan.