"It was Dave's idea," said Yankees manager Joe Girardi, crediting pitching coach Dave Eiland with the unorthodox effort to reverse Wang's poor showing through two starts. "He just thought it would help get him back on track."
Wang is 0-2 with a 28.93 ERA after two starts. He has walked six and struck out one batter in 4 2/3 innings.
After throwing about 20 pitches to teammates Cody Ransom and Melky Cabrera, Wang said he was encouraged.
"I feel good," Wang said.
The goal for Wednesday, Wang said, was to "slow down" his left leg because his lower body was getting ahead of his arm during his delivery.
Part of the idea, Girardi said, was to provide Wang more emotional stimulation than the routine bullpen session would have offered.
"Because it's more live -- it's more simulated," Girardi said. "It's more of what you're going to see during the course of a game."
Wang will throw his regular side session at Yankee Stadium on Thursday, and he said he'll continue to prepare as usual for his next scheduled start, on Saturday against the Indians.
Carter Gaddis is a contributor to MLB.com. This story was not subject to the approval of Major League Baseball or its clubs.