Brandon Carlo scored the only goal in the shootout - the longest in Americans' history - giving Tri-City a 5-4 win.
Tri-City led 2-0 after the first period, and 4-2 after 40 minutes.
Regina's regulation time goals came from Adam Brooks, Jared Freadrich, Cole Sanford and Rykr Cole. Nothing was decided in overtime as the Ams outshot the Pats 3-2.
In the 10th round of the shootout, Brandon Carlo fired a shot high glove side that put the Americans in front. Evan Sarthou shut down Chase Harrison’s attempt to tie, giving the Americans a 5-4 win.
The 10 rounds are the longest shootout in Americans’ history, with the previous record being a seven-round shootout.
Stymied in the shootout for Regina were, in order,: Cole Sanford, Adam Brooks, Sam Steel, Rykr Cole, Adam Berg, Lane Zablocki, Jake Lechsyshyn, Austin Wagner, Sean Richards and Chase Harrison.
Tri-City recorded six penalty minutes and was 1-of-2 on the power play, while Regina was unsuccessful with three power play opportunities and spent four minutes in the penalty box.
Evan Sarthou made 29 saves, and 10 in the shootout, in the win. Tyler Brown stopped 35 shots, and made nine saves in the shootout, in a losing effort.
The Pats finished their six game west coast trip at 2-3-0-1. They return home to the host the P.A. Raiders next Saturday night at 7:00 pm on 620 CKRM.
(With files and photo from AmsHockey.com)