Stephen Holt scored 14 points, shooting 12-for-12 on free throws, and Jordan Giusti had a career-high 12 points for the Gaels (2-0) in a game that started at midnight local time and ended at 2:14 a.m.
Saint Mary's led 38-31 at halftime and used a 15-1 run midway through the second half to pull away.
Leading 47-44, Giusti started the spurt with a free throw, Matt Hodgson tipped in Giusti's miss on the second shot to put the Gaels up six. Giusti's layup capped a run of 11 straight points, and after a free throw by the Zips, Walker and Garrett Jackson had consecutive layups to increase the lead to 62-45 with just under 9 minutes remaining.
Gonzaga has signed California transfer Jordan Mathews to a financial aid agreement for the 2016-17 season.
Coach Gilmore on CWS win: 'It's indescribable' Coastal Carolina head coach Gary Gilmore reflects on his 21 years as head coach and is proud of how far the program has come.
Two late June events provided a great start on the 2020 class and a look at some new 2019 talent.