In a Showdown in round 3, 2017, Betts was racially abused by a club member. The offender was evicted from the ground and had his membership suspended indefinitely. In the Crows' next match, Betts was given the honour of tossing the coin before the match along with player Anthony McDonald-Tipungwuti before kicking 6 goals, taking the lead in the Coleman Medal in the Crows' 65-point win. This included 5 first-half goals, and he and McDonald-Tipungwuti kicked 10 goals between them for the match. In round 7, he kicked his 500th career goal against in the second quarter, before being flattened by defender Scott Thompson and immediately getting a set shot to kick his second goal in a row. Overall he got three goals for the match in spite of the Crows losing by 59 points. Betts had another good performance in 2017's Sir Douglas Nicholls Indigenous Round, kicking three goals in the Crows' 100-point win over . In August 2017, Betts was admitted to hospital with appendicitis and missed Adelaide's round 19 draw against Collingwood but returned the following week for the Showdown and kicked 4 goals, pushing up to second place on the overall Showdown leading goal-kickers list, only behind captain Taylor Walker. Betts was a part of Adelaide's losing Grand Final team that year, kicking one goal in the match.