Lazio stun Parma as Fiorentina slip at Samp
Lazio's midfielder Antonio Candreva (C) celebrates after scoring during an Italian Serie A football match on March 30, 2014 at Rome's Olympic stadium - by Andreas Solaro
Earlier, goals in either half from Mattia Destro and Michel Bastos helped Roma to a cagey 2-0 win away to Serie A strugglers Sassuolo to close the gap on leaders Juventus to 11 points.
Juve are at third-placed Napoli later Sunday when they will be looking to restore their 14-point lead as they stride towards a likely third consecutive scudetto.
At the Olympic Stadium Senad Lulic gave Lazio a 15th minute lead and after Jonathan Biabiany had levelled barely 10 minutes later Miroslav Klose put the hosts within sight of a precious win with a 67th minute strike.
Lazio suffered a blow when a defensive mix-up saw Michael Ciani intercept a cross intended for Antonio Cassano with the ball spinning away from the defender and out of reach of 'keeper Federico Marchetti and into the Lazio net.
Parma looked to be heading for a share of the spoils but when Spanish striker Keita drove a daisycutter into the area Candreva ran in to volley beyond Antonio Mirante and into the net for a welcome injury-time winner.
Parma, remain sixth but are only one point behind fifth-placed Inter who occupy the first Europa League qualifying spot ahead of their visit to Livorno on Monday.
Lazio's 12th win of the campaign kept them in eighth although Edy Reja's men are now only two points off Parma and three behind Inter.
Fiorentina's bid for a top three finish and Champions League qualification, meanwhile, suffered a blow in a scoreless draw away in Genoa which saw Juan Vargas smash a freekick off the crossbar and Samp coach Sinisa Mihajlovic red-carded at the end of the game for dissent.
Fiorentina remain fourth but are now nine points behind Napoli in third and only four ahead of Inter.
Elsewhere, 10-man Verona kept in the hunt for Europe's second-tier club competition with a 3-0 home win over Genoa, with veteran striker Luca Toni grabbing a late brace.
Marco Donadel opened the scoring with a low strike from outside the area which beat Mattia Perrin in the Genoa goal just after the half hour.
Verona were reduced to 10 men when Michelangelo Albertazzi picked up a second booking on the cusp of half time.
However Genoa did little to make the man advantage count and Toni made the visitors pay with two late goals inside the space of six minutes to take his tally for the season to 15, just three shy of leader Carlos Tevez.
Verona sit in ninth, only two points behind Lazio and one ahead of Torino who secured a 2-1 win over Cagliari.
Omar El Kaddouri opened Torino's account on the cusp of half-time and Alessio Cerci doubled the Granate's lead on 71 minutes.
Genoa grabbed a consolation goal six minutes later when Brazilian Nene rose to head Francesco Pisano's inch-perfect cross past Daniele Padelli.