Former pitcher Luis Tiant died at the age of 83:

Summing Tiant up using mere numbers does him no justice. He was known for, among other things, being as experimental as any pitcher who has graced a mound. He would reliably alter his delivery’s timing by turning his back to the plate; his release point by dropping down as needed; and his ever expanding arsenal that included both a good fastball and a knuckleball, among countless other offerings — anything to thwart an offense. 

CBSSports.com

My thoughts go out to his family and friends.

Tiant was always fun to watch. He had a long peak, collecting 57.5 rWAR from 1966 to 1978, with only four of those 13 seasons under 3.00 WAR. His best year came in 1968 when he posted an 8.5 rWAR for the Indians. He went 21-9, pitching 258 1/3 innings with 264 K and just 16 home runs allowed. Cleveland went 86-75 that year, one of their better performances before their rise in the 1990s.

He went undefeated in the post-season, 3-0 in four starts and a relief appearance with a 2.86 ERA. For many years if you bought a Cuban Sandwich at Fenway Park, Tiant was there to sign a picture for you. That gave many, many fans a chance to meet him up close.