Rafael Nadal has been practicing at Roland Garros for a couple of days, training with Jaume Munar, Sebastian Korda and David Goffin. The 13-time Roland Garros champion is not the first favorite in Paris, a rare scene at the clay Major since 2005.Nadal made a perfect start to the season, winning the opening 20 matches and conquering the 21st Major crown at the Australian Open. The Spaniard had to skip six weeks following a rib injury from Indian Wells, and he is yet to reach his usual level on clay.Rafa lost the Madrid Masters quarter-final to Carlos Alcaraz and was beaten by Denis S …