It was the fifth longest homer hit by a D-back and sixth longest homer overall hit since Chase Field opened in 1998.
Adam Dunn, then with the D-backs, hit the longest, a 504-foot shot on Sept. 27, 2008, also against the Rockies, that one off Glendon Rusch.
The two previous longest home runs were 470 feet, set by Ryan Zimmerman of the Nationals earlier Saturday and Manny Machado of the Orioles on Friday.
Barry M. Bloom is a national reporter for MLB.com and writes an MLBlog, Boomskie on Baseball.