The five-time champion has been sidelined with a rib stress fracture since the Indian Wells final in March.After being sidelined with injury for over a month, Rafael Nadal took to social media to announce his return to action will take place on home soil—or make that home 'tierra', as he joins the stacked field on the clay of the Mutua Madrid Open.'Despite arriving with only just enough preparation and it being difficult, I really want to play and play at home since the opportunities are few,' the 35-year-old wrote on social media.