Dan Runzler was born March 30, 1985, in Santa Monica, CA, USA.

Dan Runzler is 6 feet 4 inches tall. He weighs 235 pounds. He bats left and throws left.

Dan Runzler debuted on September 4, 2009, playing for the San Francisco Giants at AT&T Park; he played his final game on September 30, 2012, playing for the San Francisco Giants at AT&T Park.

In 2010, Dan Runzler played in 41 games, all for the San Francisco Giants, and batting in 40 of them. He had 1 at bat, getting 0 hits, for a .000 batting average, with 0 runs batted in. He was walked 0 times. He struck out 1 time.

Dan Runzler played in 6 games at pitcher for the San Francisco Giants in 2012, starting in none of them. He played for a total of 11 outs, equivalent to .41 9-inning games.

He made no putouts, had no assists, and committed no errors, equivalent to 0 errors per 9-inning game. He had no double plays.