Daniil Medvedev will try to reclaim the world number one ranking and top seed Aryna Sabalenka chases her first final in 10 months at the ATP and WTA Miami Open. Men's play starts Wednesday and women's play begins Tuesday in the hardcourt tournament at Hard Rock Stadium, where highest seeds receive first-round byes. Serbia's Novak Djokovic moved into the top spot of the rankings this week, bumping out reigning US Open champion Medvedev after a three-week stay following his third-round exit at Indian Wells. The 26-year-old Russian, runner-up at the past two Australian Opens, would return to the top spot with a semi-final run at Miami. Medvedev only reached his first Miami quarter-final last year, when he lost to Roberto Bautista Agut, so a last-four spot would mark a best-ever run in Miami.