Pascal Siakam dunk: Pacers star throws down poster slam over Thunder's Jalen Williams in NBA Finals Game 6

With their backs against the wall, the Pacers entered Game 6 of the NBA Finals with a sense of desperation. All-Star forward Pascal Siakam got the memo, and he fueled Indiana's 64-42 halftime advantage over the Thunder with a team-high 13 points.

No two were louder than a poster dunk in the first half's final minute.

Siakam is in his ninth NBA season, but he provided a reminder that he's as spry as ever despite being on the other side of 30 — and 24-year-old All-Star Jalen Williams was on the wrong side of Siakam's highlight.

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Here is how it went down, including the poster dunk in its full glory.

Pascal Siakam dunk: Pacers star posterizes Jalen Williams

All things in the first half came up Indiana, and the home team was building momentum with a run to close the second frame. A hobbled Tyrese Haliburton set up Siakam for a play that exponentially increased that momentum.

After a perfectly played passing lane from Haliburton resulted in a steal and a fast break, Siakam did his job by running the floor. Haliburton found Siakam with a slick no-look pass. From there, Flight 43 was cleared for takeoff.

— Indiana Pacers (@Pacers) June 20, 2025

Because Williams first tried to make a play on Haliburton, he was a half-step slow with his contest of Siakam's dunk. And while there may be no "business decisions" with an NBA title on the line, Williams' tardiness to the play resulted in him being on a poster.

MORE: Tyrese Haliburton shines in Game 6 despite calf injury concerns

As for Siakam, he pummeled the rim with a powerful dunk. It set up quite an impressive poster photo, as well.

OMG. pic.twitter.com/DuWpY9gVoZ

— Indiana Pacers (@Pacers) June 20, 2025

The Pacers are looking to emerge from a 3-2 series deficit to win the first NBA title in franchise history. Siakam's dunk may be just one play, but a little momentum could go a long way.