Former world No. 1 Mats Wilander thinks Daniil Medvedev has earned the No. 1 ranking with his consistency but acknowledged that the Russian’s recent losses to Rafael Nadal show that he still has to prove himself. After blowing a two-set lead in the Australian Open final, Medvedev had a chance to get revenge over Nadal in Acapulco but the Spaniard handed the Russian a 6-3 6-3 loss en route to winning it all. “Losing to Rafa Nadal in Acapulco in those humid conditions, the balls didn’t fly in the air as fast as they usually do, like they did for example in Australia. The court was very slow. I think that in Acapulco, you can easily explain why Medvedev lost because of the conditions.And this is his problem, so he cannot be considered the best tennis player in the world every day, n …