| Glenn Layendecker | |
| Residence: | San Mateo, California |
| Birth Date: | 9 May 1961 |
| Birth Place: | Stanford, California |
| Turnedpro: | 1983 |
| Retired: | 1992 |
| Plays: | Left-handed (two-handed backhand) |
| Careerprizemoney: | $647,475 |
| Singlesrecord: | 118–128 |
| Singlestitles: | 0 |
| Highestsinglesranking: | No. 48 (May 3, 1990) |
| Australianopenresult: | 3R (1991) |
| Frenchopenresult: | 1R (1986, 1987) |
| Wimbledonresult: | 2R (1989) |
| Usopenresult: | 2R (1990) |
| Doublesrecord: | 119–127 |
| Doublestitles: | 1 |
| Highestdoublesranking: | No. 32 (October 16, 1989) |
| Australianopendoublesresult: | 3R (1991) |
| Frenchopendoublesresult: | 3R (1986) |
| Wimbledondoublesresult: | 3R (1989) |
| Usopendoublesresult: | QF (1989, 1992) |
Glenn Layendecker (born May 9, 1961) is a former professional tennis player from the United States.
His highest singles ranking was world No. 48 in 1990. Layendecker's highest doubles ranking was world No. 32. His career wins included wins over Andre Agassi, Michael Chang, Yannick Noah, Aaron Krickstein, Anders Järryd, and Brad Gilbert in singles matches. He also beaned John McEnroe in the temple with an approach shot at the US Open.
Layendecker graduated from Yale University in 1983.
He was the tennis coach of the Oregon Episcopal School Aardvarks. Under his coaching, the team garnered four consecutive state titles.[1] Layendecker lives in San Mateo, California and worked for the West Coast Conference before retiring in 2023.
| Result | W/L | Date | Tournament | Surface | Partner | Opponents | Score | |
|---|---|---|---|---|---|---|---|---|
| Loss | 0–1 | Feb 1985 | Toronto, Canada | Carpet (i) |  Glenn Michibata |  Anders Järryd Peter Fleming | 7–6, 6–2 | |
| Loss | 0–2 | Oct 1987 | San Francisco, US | Carpet (i) | Todd Witsken | Jim Grabb Patrick McEnroe | 6–2, 0–6, 6–4 | |
| Loss | 0–3 | Jan 1989 | Adelaide, Australia | Grass |  Mark Kratzmann | Neil Broad Stefan Kruger | 6–2, 7–6 | |
| Loss | 0–4 | Feb 1990 | San Francisco, US | Carpet (i) | Richey Reneberg | Kelly Jones Robert Van’t Hof | 2–6, 7–6, 6–3 | |
| Win | 1–4 | Jul 1992 | Stuttgart, Germany | Clay | Byron Talbot |  Javier SánchezMarc Rosset | 4–6, 6–3, 6–4 |