Logan Chalmers sealed a point for Partick Thistle
Partick Thistle twice recovered from a deficit to draw with Greenock Morton in the Scottish Championship.
Thistle had the chance to take the lead after Zak Delaney had fouled Logan Chalmers but Brian Graham's penalty was saved.
Nathan Shaw put Morton in front with a free-kick on the stroke of half-time.
Daniel O'Reilly struck just after the hour mark to draw Partick level.
The visitors were back in front through Filip Stuparevic's 69th-minute shot and the lead held until the first minute of added time, when Chalmers netted from close range.
The home side are fourth in the table, nine points off Livingston, while Morton are nine points behind Thistle in sixth.
