.319 BABIP 1st half vs .272 2nd half. For his MLB career his BABIP is .287
So yes, probably some luck in the 1st half, IIRC some here commented on lucky hits dropping in
Kirk is a bit of an enigma, who knows how he does going forward. He's slow already, and being a catcher, will keep slowing down as soon as next season.
Personally I think moving him now is a sell high, but I could be wrong, and I've been wrong before.