Partick secured their First Division status with a narrow win over 10-man Dundee who had player-coach Alex Rae sent off in the 90th minute.
The Jags went in front after 17 minutes when Adam Strachan crashed the ball high into the net from 10 yards.
Dundee levelled five minutes later when Derek Lyle scored his 14th goal of the
The Jags got the winner after 53 minutes when Derek Young fired low past Ludovic Roy.
Partick Thistle: Tuffey, John Robertson, McChrystale, Smith, Boyd, Sives (Hodge 70), James Gibson, Young (Morrow 83), Billy Gibson, Roberts (Russell 89), Strachan. Subs Not Used: Arthur, Ferguson.
Booked: James Gibson.
Goals: Strachan 17, Young 53.
Dundee: Roy, Shields, Dixon, Rae, Griffin, Gary Smith, Kevin McDonald, Lyle, Davidson, Daal (Kevin Smith 31), Swankie, Kevin Smith (Clark 84). Subs Not Used: Higgins, Gates, Forsyth.
Sent Off: Rae (90).Booked: Rae, Shields.
Goals: Lyle 22.
Ref: W Collum.