The 2013 SAP Open was a men's tennis tournament played on indoor hard courts. It was the 125th and final edition of the SAP Open, and part of the ATP World Tour 250 series of the 2013 ATP World Tour. It took place at the HP Pavilion in San Jose, United States, from February 11 through February 17, 2013. First-seeded Milos Raonic won the singles title.
See main article: 2013 SAP Open – Singles.
Milos Raonic defeated Tommy Haas, 6–4, 6–3See main article: 2013 SAP Open – Doubles.
Xavier Malisse / Frank Moser defeated 
Lleyton Hewitt / Marinko Matosevic, 6–0, 6–7(5–7), [10–4]| Country | Player | Rank1 | Seed | |
|---|---|---|---|---|
| Milos Raonic | 13 | 1 | ||
| John Isner[1] | 16 | 2 | ||
| Sam Querrey | 20 | 3 | ||
| Tommy Haas | 22 | 4 | ||
 Spain | Fernando Verdasco | 24 | 5 | |
 Uzbekistan | Denis Istomin | 46 | 6 | |
| Australia | Marinko Matosevic | 49 | 7 | |
| Belgium | Xavier Malisse | 51 | 8 |
The following players received wildcards into the singles main draw:
The following players received entry from the qualifying draw:
Brian Baker (knee injury)
Alexandr Dolgopolov (ankle injury) Mardy Fish (heart problem) Feliciano López (wrist injury)| Country | Player | Country | Player | Rank1 | Seed | |
|---|---|---|---|---|---|---|
| Bob Bryan | Mike Bryan | 3 | 1 | |||
| Spain | David Marrero | Fernando Verdasco | 45 | 2 | ||
 Mexico | Santiago González | Scott Lipsky | 67 | 3 | ||
| Belgium | Xavier Malisse | Frank Moser | 124 | 4 |
The following pairs received wildcards into the doubles main draw:
The following pair received entry as alternate:
Sam Querrey (personal reasons)