MELBOURNE—Activists made the most of the reversal of an earlier ban by giving away hundreds of T-shirts bearing the question “Where is Peng Shuai?” on women’s final day at the Australian Open on Saturday. The T-shirts, highlighting concerns about the Chinese tennis player, were confiscated by security last weekend but tournament chief Craig Tiley on Tuesday said that they would be allowed as long as fans wearing them were not disruptive. “Some people say it’s a victory that we’ve achieved that they’ve rolled back on the ban,” Australian-born Max Mok, who was raised in Hong Kong, told Reuters as he handed out the shirt. “I think it’s marginal … we don’t really know where Peng Shuai is still. There’s still a long way to go.” Peng, a former world number one doubles player, became a matter of concern in November when she alleged on social media that a former Chinese …