Daniel Joseph Runzler
- Bats Left, Throws Left
- Height 6' 4", Weight 230 lb.
- School University of California, Riverside
- High School Chaminade College Preparatory School (West Hills)
- Debut September 4, 2009
In 2009, Runzler pitched for all four of the Giants' full-season minor league affiliates (the Augusta GreenJackets, San Jose Giants, Connecticut Defenders, and Fresno Grizzlies) and for the Giants, which is believed to be a first for the team.
After not playing in the major leagues from 2013 to 2016, Runzler returned to that level with the Pittsburgh Pirates in 2017. In eight relief appearances, he had a 4.50 ERA. He played at Triple A and in independent ball in the interim.