Batsman Darren Lehmann knows England’s cricketers better than anyone on the Australian team. And he figures the visitors are hurting mentally a few days out from Friday’s third Test at the WACA ground.Lehmann, the Yorkshire captain in England county cricket and brother-in-law of English all-rounder Craig White, said he was unsure how England would react in the Test after they were thrashed in Brisbane and Adelaide."It’s almost as though we’ve got a psychological advantage over them - like a stranglehold," Lehmann said today."It will be interesting to see how they go here because they’ve got to come back pretty hard and win or the series is all over."We’re obviously right on top of them."England lost the opening Tests by 384 runs in Brisbane and an innings and 51 runs in Adelaide.Lehmann captains England batsman Michael Vaughan, off-spinner Richard Dawson and paceman Matthew Hoggard at Yorkshire, and knows White well after marrying his sister Andrea.Lehmann has scored 30, 20 not out and five in his Test innings since being recalled for the first time in four years for this series."I’m almost 33 and realise that I have to make runs to stay in the side and secure my spot. If I don’t it’s probably the end because that’s the way it works," Lehmann said."There are so many good young players around Australia. It would be nice to get a big score and, if I don’t, as long as I’ve given it 100 percent along the way and we’re winning games, that’s what matters."England paceman Andrew Caddick (back) and batsman John Crawley (hip) remain in doubt for Perth while Vaughan is expected to play despite injuring his shoulder during his first innings of 177 in Adelaide.Australian batsman Matthew Hayden will join his teammates in Perth tomorrow after remaining in Adelaide to continue his recovery from two operations for hemorrhoids.