Apparently it isn't as black and white as you seem to think it is...
According to Merriam Webster's:
"Dive, which was originally a weak verb, developed a past tense dove, probably by analogy with verbs like drive, drove. Dove exists in some British dialects and has become the standard past tense especially in speech in some parts of Canada. In the United States dived and dove are both widespread in speech as past tense and past participle, with dove less common than dived in the south Midland area, and dived less common than dove in the Northern and north Midland areas. In writing, the past tense dived is usual in British English and somewhat more common in American English. Dove seems relatively rare as a past participle in writing."
I think let's say either is OK for our purposes. I am not surprised that anyone would say that one or the other is more correct though, because depending on where you are or grew up or whatever, either might really actually be more correct, i.e. more conventional, and convention is what language is ultimately all about. That is all.
I think a good portion of the blame for the PP has to be on Ovechkin. If he isn't shanking open shots, the team gets some goals out of #8, and the additional pucks going to the net create more rebounds and scoring chances.
Maybe Green or Semin should play the left wall/left point, since they at least get one timers on net these days.