Put a ring around it. When New Zealand captain Brendon McCullum farewells test cricket at Hagley Oval this week, Mitchell Marsh will probably claim his wicket.
That's the "bunny" theory being peddled in Australia as the teams line up for the final time this summer.
Marsh has claimed McCullum's wicket five times for 27 runs in his last nine innings and the Sydney Morning Herald uses those statistics to headline their theory the NZ captain is a "walking wicket" for the Aussie all-rounder.
NZ coach Mike Hesson talked around the concept when he was quizzed about a range of topics on Radio Sport, leading into Saturday's start to the last test.
"Interesting isn't it when you have a fourth seamer generally following three pretty good ones, often that fourth seamer picks up wickets the others have earned," Hesson said.