Tanner had a fantastic 2015 season as Lower Columbia College won the NWAACC for the first time since 2010. Tanner played in 40 games with 126 at-bats, 40 hits, six doubles and 24 RBI's. Worked eight walks with just 16 strikeouts and four stolen bases.

Tanner joins his teammate Lorin Archibald as two of the Lower Columbia standouts on the Black Bears roster this season.

In game two, on May 25th, against Mt. Hood for the 2015 NWAACC Championship Tanner went 3-for-4 with one run scored as The Red Devils took game two 6-1 and clinched the title. 

On May 24th, Tanner completed his appearance with another outstanding effort going 3-for-5 with two runs scored and one RBI against Edmonds in the semifinals.

Tanner's .380 average was good for third on the team, his slugging percentage finished the season at .352 after being as high as .402 and his OPS clocked in at .717 with an on-base percentage of .365.