Just two points separate the two sides at the top of the table as PSG lead Lyon by a point, while Marcelo Bielsa's side are just a point behind them in third place ahead of the clash on Sunday.
Marseille had a stuttering start to the season in August and September, but since October they have been in contention for the title step-for-step with PSG.
Bielsa's men lost a bit of impetus in their season in Christmas and the New Year period as they crashed out of the Coupe de France, while they lost on the road in Ligue 1 to Montpellier and Monaco which saw them lose their grasp on first place.
Since that period Marseille have managed to regain their composure with big victories over Lens and Toulouse, but they may look back at their defeat to Caen at the end of February with regret as they lost 3-2, despite holding a 2-0 lead in the second half.
At the Stade Velodrome, Bielsa's side have lost twice all season, including their defeat to Caen, but they will be hopeful that a three-game unbeaten run will be the springboard to supplant PSG and Lyon to claim the title.
Recent form: WDWLDD
Laurent Blanc was under immense pressure at the start of the campaign, but the Frenchman has managed to ride out the problems to guide his team to the top of the table, while they are also in the quarter-finals of the Champions League and the last four of the Coupe de France.
The international break came at the right time for Blanc and his men to regroup following a hectic period of fixtures, including their win over Chelsea on away goals at Stamford Bridge.
PSG may have showed the effects of their exploits in Europe with a 3-2 defeat to Bordeaux four days after their win over the Blues, but quickly managed to get back on track courtesy of a 3-1 win over Lorient.
Their form since the turn of the year has been solid, with their only two defeats coming away against Bordeaux and in January against Bastia.
Their performances on the road have been inconsistent, which is why they haven't pulled away from Lyon or Marseille at the top of the table, winning only five out of a possible 15 matches.
With four away matches to play this season, Blanc will be hopeful that his side can round into form just in time to secure the Ligue 1 title.
Recent form: WLWDWD
Recent form (all competitions): WLDWWD
Marseille defender Nicolas Nkoulou is out of the clash as he has been deemed not fit enough by Biesla despite his return to training this week following knee surgery. Rod Fanni and Jeremy Morel will play at the heart of the defence as Baptiste Aloe is expected to drop to the bench.
Thiago Motta filled in at centre-back against Lorient, but Luiz should replace him in the starting lineup, while Gregory van der Wiel and Marquinhos will battle it out for the spot at right-back as the Dutchman performed well in the absence of the Brazilian.
Yohan Cabaye and Serge Aurier could return on the bench after missing out against Lorient, while the attack will likely be led by Zlatan Ibrahimovic following his hat-trick in the 3-1 victory at the Parc des Princes.
Marseille possible starting lineup:
Mandanda, Fanni, Morel, Romao, Lemina, Dja Djedje, Mendy, Payet, Ayew, Thauvin, Gignac
PSG possible starting lineup:
Sirigu, Marquinhos, Luiz, Silva, Maxwell, Matuidi, Pastore, Verratti, Ibrahimovic, Cavani, Lavezzi
Head To Head
PSG claimed victory at the Parc des Princes in the meeting between the sides earlier in the campaign when goals from Lucas and Ibrahimovic were enough to clinch a 2-0 victory as Imbula saw red for the visitors.
The win was Blanc's side's fourth in a row over Marseille as they did the double last season with 2-0 and 2-1 victories. PSG lead the head-to-head series 19-12 over Les Phoceens, with seven draws having taken place in the history of the contest.
We say: Marseille 1-2 PSG
The game should be a very interesting affair and whichever team is able to cope with the pressure will come out on top.
For that reason, PSG will claim the three points at the Stade Velodrome due to their experience of these situations this season and Bielsa's side's run of inconsistent form since the turn of the year.