Steve “Stevie” Johnson Jr. (born December 24, 1989) is an American professional tennis player. For one week in August 2016 he was the top-ranked American in men’s singles. He has a career-high singles ranking of world No. 21 achieved on 25 July 2016 and a doubles ranking of world No. 39 achieved on 23 May 2016. He has won four ATP Challenger Tour titles and four ATP Tour 250 titles, one at Nottingham on grass, twice at Houston on clay and most recently at Newport on grass. He won a bronze medal in men’s doubles at the 2016 Olympics with fellow American Jack Sock. Johnson played college tennis for the USC Trojans. He won the NCAA Men’s Singles Championship in his junior and senior seasons (2011–2012), and he was a part of a Trojan team that won four consecutive NCAA Championships.
Monteiro has a career high ATP singles ranking of world No. 74 achieved on 27 February 2017. He also has a career high ATP doubles ranking of No. 157 achieved on 22 November 2021. On the ITF Junior Circuit, Monteiro peaked in the rankings at No. 2 on 2 February 2012, with his biggest junior singles title being the Grade A, Copa Gerdau in Porto Alegre, Brazil in 2011.