July 1 was a busy day for defensive specialists like Alzner and Girardi. There aren't many statistics that measure defensive contributions, but Alzner and Girardi rank well among those that do.
Over the past seven seasons, Girardi led the NHL with 1,265 blocked shots, and Alzner ranked fifth with 1,048. Alzner's 1,475:19 of shorthanded ice time ranked sixth, ahead of Girardi (1,467:17).
Their tough defensive assignments left each defenseman with below-average shot-based metrics. Since 2009-10, Girardi's Relative SAT percentage of minus-4.1 percent ranks 251st among the 259 active defensemen to play at least 50 games, and Alzner's ranks 208th at minus-2.1 percent.