Matthew Paul Riley (born August 2, 1979) is an American former professional baseball pitcher.

He dominated for the Delmarva Shorebirds of the South Atlantic League at age 18, having an earned run average of 1.19 and 136 strikeouts in 83 innings pitched.

However, in 2000, he made only two starts for the Rochester Red Wings (then the Orioles' Triple-A affiliate), giving up 11 earned runs in 7 innings.

He was able to play briefly in the major leagues for Texas, but as a one-out middle reliever rather than a starter.

[1][2] In 2007, Riley played for the Las Vegas 51s and Jacksonville Suns in the Los Angeles Dodgers minor league system.