Oklahoma City's front office was extremely active before Thursday's trade deadline.
Westbrook and Ibaka both posted monster double-doubles and Oklahoma City started the second half of the season with a 104-89 drubbing of the Dallas Mavericks.
Westbrook poured in 34 points with 10 assists and Ibaka tallied 21 points with a career-high 22 rebounds for the Thunder, who made a series of moves just before the deadline in hopes of not just securing a playoff berth, but making a run through a loaded Western Conference.
The Thunder moved into a tie with idle Phoenix for the eighth playoff spot in the West.
Anthony Morrow took advantage of extended minutes and to score 16 points for Oklahoma City, which won going away despite Kevin Durant shooting just 4- for-14 and leaving the game in the fourth quarter after aggravating a foot injury.
Dallas opened the game 3-for-19 from the floor and didn't make a 2-point field goal until Richard Jefferson's reverse layup at 3:19.
The Thunder didn't exactly light it up in the first quarter either. They led 25-19 after one but broke the game open in the second behind Morrow, who scored 14 points in the period.
Morrow's 3-pointer at 1:31 gave OKC its biggest lead of the half at 17 points, and he beat the buzzer with a baseline fadeaway to make it 52-36 at halftime.
Westbrook bested Morrow's second quarter with 15 points in the third, including 10-for-10 from the stripe, as the Thunder extended their lead to 18 heading into the fourth.
An 8-0 Dallas run to start the fourth had the Mavs within 10, but the margin never dipped back into single digits.
Dirk Nowitzki paced the Mavericks with 14 points.
In a lesser move, the Thunder sent guard Ish Smith, a 2015 second-round pick, the rights to Latavious Williams and cash considerations to the Pelicans in exchange for a 2016 second-round pick ... Over the All-Star break, Dallas signed forward Amar'e Stoudemire, who was waived by New York ... Dallas guard Rajon Rondo returned after missing six games with a broken bone near his left eye ... Oklahoma City has won four straight games ... Westbrook went 14-for-14 from the foul line.