The result has opened the title race back up, with St Pat's able to move level on points with Rovers if they beat Dundalk on Monday night.
St Patrick's Athletic have moved to within three points of Premier Division leaders Shamrock Rovers following a 2-0 win at Richmond Park.
Jay McClelland gave the Saints an early lead before Aidan Keena doubled their advantage later in the first half.
Rovers had plenty of possession but were unable to find a way through a strong St Pat's defence.
The result has opened the title race back up, with St Pat's able to move level on points with Rovers if they beat Dundalk on Monday night.
Bohemians are also just three points off the top after coming from two goals down to defeat Galway United 3-2.
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