Question: Pierre-Hugues Herbert and Richey Reneberg, have which occupation in common?

Context paragraphs:
Pierre-Hugues Herbert: Pierre-Hugues Herbert (] ; born 18 March 1991) is a French professional tennis player.  In doubles, he won the title at the 2015 US Open and 2016 Wimbledon as well as several Masters 1000 tournaments along with Nicolas Mahut.  In singles he has reached one ATP career final (at the 2015 Winston-Salem Open), and achieved his career high singles ranking of World No. 64 on 14 August 2017.

1994 Australian Indoor Championships – Doubles: Patrick McEnroe and Richey Reneberg were the defending champions but only Reneberg competed that year with Jim Grabb.

1990 Newsweek Champions Cup – Singles: Miloslav Mečíř was the defending champion, but lost in the first round to Richey Reneberg.

1998 Stockholm Open – Doubles: Marc-Kevin Goellner and Richey Reneberg were the defending champions, but did not participate together this year.  Goellner partnered Wayne Ferreira, losing in the quarterfinals.  Reneberg partnered Jonathan Stark, losing in the semifinals.

1992 Australian Indoor Championships – Doubles: Jim Grabb and Richey Reneberg were the defending champions but lost in the final 6–2, 6–3 to Patrick McEnroe and Jonathan Stark.

Richey Reneberg: Richey Reneberg (born October 5, 1965) is an American former professional tennis player.

1996 Kroger St. Jude International – Doubles: Jared Palmer and Richey Reneberg were the defending champions but only Reneberg competed that year with Jim Grabb.

1994 Comcast U.S. Indoor – Doubles: Jim Grabb and Richey Reneberg were the defending champions, but Reneberg did not participate this year.  Grabb partnered Jared Palmer, finishing runner-up.

2000 Franklin Templeton Tennis Classic – Doubles: Justin Gimelstob and Richey Reneberg were the defending champions, but Gimelstob did not participate this year.  Reneberg partnered Jared Palmer, successfully defending his title.

1997 Grand Prix de Tennis de Lyon – Doubles: Jim Grabb and Richey Reneberg were the defending champions, but did not participate together this year.  Grabb partnered Wayne Black, losing in the first round.  Reneberg partnered Sjeng Schalken, losing in the first round.

Supporting paragraphs: Pierre-Hugues Herbert Richey Reneberg
Answer: tennis player