Matthew Polinsky (born February 24, 1984) is a retired American professional wrestler and current color commentator better known by his ring name Corey Graves. He is currently signed to WWE and works in its developmental territory, WWE NXT, as a color commentator. 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.