Except Delonte played down the stretch in those games and the offense was terrible.
I don't think Delonte played that poorly in those games. He had 20 points on 8/16 shooting in 50 minutes in games 4 & 5 combined. Only 1 assist though, but not too bad for a 2nd stringer. Rondo only gave us 16 points and 8 assists in the 68 total minutes he played in those 2 games. I'd say Delonte outperformed Rondo based on stats, but moreso, just from my recollection of the games.
And if we're talking about down the stretch... the defining moment that I believe lost us that playoff series was Rondo's missed layup. KG's inability to go up strong against D-Wade was #2.
I agree with GreenEnvy that Delonte should have played a lot more. I remember begging for it while watching.