See main article: 2010–11 Euroleague. Results for Quarterfinals of the 2010–11 Euroleague basketball tournament.
The quarterfinals were played from March 22 to April 6, 2011. Team #1 (i.e., the group winner in each series) hosted Games 1 and 2, plus Game 5 if necessary. Team #2 hosted Game 3, plus Game 4 if necessary.
Team 1 hosted Games 1 and 2, plus Game 5 if necessary. Team 2 hosted Game 3, and Game 4 if necessary.
| width=250 | Team 1 | width=80 | Agg. | width=250 | Team 2 | width=80 | 1st leg | width=80 | 2nd leg | width=80 | 3rd leg | width=80 | 4th leg | width=80 | 5th leg |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Caja Laboral  | 1–3 |  Maccabi Tel Aviv | 76–70 | 81–83 | 60–81 | 77–99 | |||||||||
| FC Barcelona | 1–3 | Panathinaikos | 83–82 | 71–75 | 74–76 | 67–78 | |||||||||
| Real Madrid | 3–2 | Power Electronics Valencia | 71–65 | 75–81 | 75–66 | 72–81 | 66–58 | ||||||||
| 1–3 |  Montepaschi Siena | 89–41 | 65–82 | 72–81 | 76–88 |