QPR played out a 1-1 draw with Preston at Deepdale in the Championship on Saturday afternoon.
The visiting London outfit took the lead as early as the fifth minute when Sebastian Polter headed in Alejandro Faurlin's cross from close range.
Rangers looked set for the win when deep into injury time Eoin Doyle equalised for Preston.
Former QPR winger and Club Ambassador Sinton has taken to Twitter to express his disappointment at the final result.
Over the course of the 90 minutes at Deepdale on Saturday afternoon, hosts Preston had 63% of the possession, took 12 shots of which only two were on target, and earned 10 corners.
Visitors QPR had just 37% of the possession, took 13 shots of which four were on target, and earned three corners.
Rangers are 11th in the Championship table at the moment with 51 points from 38 matches.