I posted this match-up because I really believe it would be an extremely tactical battle.
In 2008, Rondo was still a hard working defender, although he would be much too thin to defend Smart, especially if he’s backing him down. Alternatively, Rondo would been too agile for Smart on the break and Rondo’s length would close off Smart’s passing lanes.
Ray Allen’s offensive perimeter movement would be a nightmare for Jaylen Brown, who’s biggest weakness is off-ball defence. Ray, in turn, would get killed on defence again a superior athletic Brown.
The Tatum and Pierce match-up would be an amazing one on one duel. Tatum’s length probably gives him an edge, but let’s not forget Pierce did a fantastic job against LeBron in 2008.
Rob Williams would match up well defensively against Garnett, but would essentially be irrelevant on offence against prime defensive Garnett.
I’d imagine Horford’s ability to stretch the floor would eventually force Doc to bench Perkins.