Marco Ferrufino's San Jose preserved their league lead on goal difference, with a come-from-behind 3-1 win over Bolivar.
Juanmi Callejon had put the visitors to the Estadio Jesus Bermudez ahead on 16 minutes, before San Jose headed to the half-time break level courtesy of Ariel Juarez's effort seven minutes out from the interval.
Bolivar held firm until the final 20 minutes, when Carlos Neumann broke through for a match-winning brace.
The Strongest enjoyed a 2-0 home win over Oriente Petrolero, courtesy of second-half strikes to Luis Melgar and Ernesto Cristaldo.
They have played one game more than their title rivals, with San Jose's plus-13 goal differential decisive.
Club Universitario are one point shy of the leading pair, after a 1-0 home win over Guabira.
Ruben Cuesta scored the game's only goal, inflicting a third straight defeat on Guabira.
Real Potosi chalked up back-to-back victories, with a 1-0 win at home to Sport Boys.
Maximiliano Andrada's 39th-minute goal was the difference, with Real four points adrift of Club Universitario in the battle for a Copa Sudamericana spot.
Wilstermann moved clear of Nacional Potosi at the bottom of the table, with a 3-1 win over the cellar-dwellers.
Aurora made it three wins in their past four to climb to eighth on the table, after a 2-1 road win over second-bottom Blooming.
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