2014–15 also saw Russell play a prominent role in Glasgow Warriors' Pro12 title triumph. In the final match of the regular season, his personal points haul of 22 (including two tries) contributed to the bonus-point victory over Ulster needed to secure a home play-off. The following week, against the same opposition, Russell's extraordinary pass to D.T.H. van der Merwe in the 75th minute resulted in a touch down and tying the score at 14–14. Russell then stepped up to slot home the decisive conversion from a daunting position to send Glasgow into the Final.