Jirsa, the 2017 SCIAC Player of the Year, and Miller, also one of the best players in the league, tried to one-up each other over the course of the gruelling 54-hole tournament, but the other kept raising his level.
Oxy's Dyanmic Duo each shot 9-over 225 for the weekend.
Jirsa's 71 on Tuesday came at an opportune time to tie Miller. Miller, however, edged Jirsa on the SCIAC season, finishing the seven-round conference schedule with Oxy's lowest stroke average.
"It's only appropriate that our two hardworking co-captains end up tied at this prestigious event," Oxy head coach Will Morris said. "Dylan has been a fantastic co-captain, competitor and student during his Oxy career and we will miss him greatly"
Miller, a junior from San Francisco, is returning next season.
"We expect Sam to be one of the elite players in the entire country next year," Morris said.
Oxy's third-best finisher at the championships was first year Aaron Montgomery who shot 77, 77 and 77, demonstrating remarkable consistency.
"Aaron showed great improvement throughout the year," Morris said. "The sky is the limit in terms of his potential on the golf course."
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