He's done it as long as he's been a Sens prospect at the very least. I remember making the same assessment last season in his 9 game stint AND during the WJC that he takes the short shift mantra to the extreme.i find zibby looks better on the center personally. also did anyone else notice his shifts are not long at all? and its not because of quick line changes. hes almost ALWAYS the first one off. thats pretty weird... youd think hed wanna play the most possible. there was a time where turris and alfie stayed like an extra minute more and obrien played with them instead cuz zibby came off so early.
Dunno if it's a conditioning issue (I remember a report a while ago about how his coaches were trying to get him to breath more when he's on the ice) or if he's just taking the coaching to it's logical extreme.