The NBA playoffs start Saturday, but one of the flashiest people in and around the NBA will be notably absent from the coverage.

NBA on TNT sideline reporter Craig Sager is reportedly battling leukemia and began treatment Friday. (Via YouTube / Foot Locker)

Sager's son, Craig Sager, Jr., broke the news on Twitter saying his father will undergo three to four weeks of acute leukemia treatment.

A writer for Deadspin notes if the timeline of Sager's treatment and the younger Sager's follow-up tweets are any indication, the questionably dressed veteran sports reporter will miss the NBA playoffs this season.

Sager is probably best known to sports fans and athletic novices alike as the man with the eclectic wardrobe. And over the years, he's taken some serious flack for his sartorial selections. (Via Bleacher Report)

But Sager's resume is long and storied — he's worked for CNN and TBS, worked the 1990 World Cup and several Olympic Games. (Via Flickr / Keith Allison)

On his show Thursday night, Keith Olbermann said it's all of that hard work — not the outfits — that makes Sager such an powerful presence.

"Craig Sager has worked, has worked from any angle and worked hard all the damn time. Leukemia picked the wrong opponent." (Via ESPN / "Olbermann")

Treatment begins today for Craig Sager of Turner Sports, my colleague since 1981: http://t.co/mLg7xjo5Tm #LeukemiaPickedTheWrongOpponent

Sager's son responded to the deluge of messages of support on his Twitter feed, saying he and his father will be watching basketball together during the playoffs while brainstorming some new outfits.

Wishing Craig Sager a speedy recovery. So much fun on the air. We all look forward to marveling at his wardrobe again soon. #NBAonTNT

Praying for Craig Sager

Statement on behalf of Turner Sports Reporter Craig Sager: "My favorite time of year – city to city, round (cont) http://t.co/CYLthFfsu9