It'll be interesting to see how well Jermaine O'Neal does against Amare. That would allow KG to defend Gallo and keep a defensive lineup more akin to what the Celtics are comfortable playing with.
I'd be a little concerned with that matchup, Amare vs JO, but only if Amare was playing very intelligent basketball. He has the quickness advantage on Jermaine but Jermaine's length and overall defensive quality should still allow him to do a serviceable job on Amare.
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Has Perk defended Amare for a lengthily period before? Since KG joined the Celtics?
I don't think he has. The Suns acquired Shaq in that 2007-08 season. Garnett has had him most of the time when matched up against the Suns. I remember Scalabrine doing a great job against Amare on one or two occasions too.