The Realtors rose from a deep slumber and hacked out the emphatic victory that eventually eased Tigers and the Alaska Milk Aces out of further contention in the All-Filipino tourney.
Air21, however, still stands in Sta. Lucias way to the next round.
Gary David erupted for a game-high 32 points while Egay Billones came through with 16 all in the second half as the Express whipped the Aces, 112-106, to stay in the running for a playoff incentive in the wildcard round.
The Express go for the playoff-clincher against the Tigers at 7:20 p.m. Wednesday.
Badly beaten by the Express Wednesday and having lost seven of their last eight games, the Realtors poured all their frustrations on the Tigers, avenging the sorry loss in their Dec. 22 match.
The Tigers denied the Realtors early passage into the quarterfinals in winning that particular contest.
The Realtors came out strong with their back to the wall and went on to dominate the Tigers all night long.
So dominant were the Realtors they outscored the Tigers in all quarters and led by as many as 51 points in the second half.
"We played great. Kung anong malas namin against Air21, ganon naman kami kaswerte tonight," said coach Alfrancis Chua after their 47-point triumph the fifth largest winning margin in league history.
"We could get outright playoff or even outright entry into the quarters with this win. But to me, whats important is simply to get this win to get back our fighting form. I think that was the missing link (in our slump)," Chua added.
Sta. Lucia could have gained outright passage into the quarters versus Red Bull had Alaska defeated Coca-Cola.
The Realtors rediscovered their character, form and rhythm with Duremdes, Espino, Kelly Williams and Mark Isip enduring various illnesses.
Curiously, Duremdes, despite a sore shin, and Williams, nursing a back injury, combined for 40 points to pace the Realtors.
The Realtors shot well from all angles, converting 55.6 percent of their three-point shots with Williams, Duremdes, Paolo Mendoza, Ricky Calimag and Alex Cabagnot firing 15 three-pointers together.
The Tigers, on the other hand, fired blanks (0-of-13) from beyond the arc and were also dominated in the battle off the boards, 39-58.
Worse, they lost top rebounder Ali Peek early after sustaining a deep eye-brow cut in the midway through the fourth quarter. Joseph Yeo suffered the same fate moments later.
The Tigers, who close out their Philippine Cup stint versus the Express Wednesday, would finish ninth place, just ahead of newcomer Welcoat.