Miami Heat shooting guard holds or has held virtually every major NBA record for 3-pointers made. He's the all-time record-holder for 3s made in a career, held the record for 3-pointers made in a single season until Stephen Curry broke it last week, and entered this postseason on the cusp of breaking Reggie Miller's record for most postseason 3-pointers in history. While there are arguments to be made for other players, Allen has a stellar case for being the best shooter in the history of the sport.

On Thursday night, in the fourth quarter of Game 3 of the Heat's opening-round playoff series against the Milwaukee Bucks, Allen added to his resume. With 8:37 left in regulation, Allen took a pass from Norris Cole and drained his 3 three-pointer of the night and the 321st of his playoff career, putting him one ahead of Miller for the all-time postseason record.

Watch the video above, which includes both the record-breaking and record-tying shots, and join us after the jump for more information on the record and a few notes on the Heat's 104-91 win.

Game 3 marked the 131st of Allen's playoff career, which means he set the record in 13 games fewer than Miller, who played in 144 playoff games in his career. This record joins several other notable feats of Allen's postseason career — he holds the records for most 3-pointers in an NBA Finals series (22, set in 2008 as a member of the champion Boston Celtics), most 3-pointers in a single NBA Finals game (eight, set in 2010 with the Celtics), most 3-pointers in a single playoff game (tied with several others with nine, although Allen is the only player to have done it twice), and most 3-pointers in a single playoff series (28, set with the Milwaukee Bucks in 2001). He's also made more playoff 3-pointers than eight teams since he entered the league in 1996-97.

On top of that, Allen isn't some old-timer making a few 3-pointers in the twilight of his career. Facing a hostile Milwaukee crowd still angry at Allen for leaving the franchise under bad circumstances in 2003, Allen knocked down 5 of 8 shots from beyond the arc and 8 of 14 shots overall to help the Heat through a horrific 1 of 12 performance from Dwyane Wade (although Wade did contribute 11 assists, nine rebounds, and five steals, as well). With Wade and LeBron James soaking up defenders on every possession, Allen has thrived as a spot-up shooter. It's almost unfair that someone with his shooting ability can get so many open looks every game.

Miami's win gives the East's top seed a 3-0 lead in the series, which isn't terribly surprising given most analysts predicted a sweep. The Bucks stuck close for much of the game, but the Heat went on a dominant 17-3 run to end the third quarter and turn the fourth quarter into a 12-minute formality.