22. San Antonio Spurs – 2011
There was no reason to expect the Grizzlies to defeat the Spurs in this first-round series. But that’s exactly what happened because Memphis knocked them out of contention. It was a major shock because Memphis scraped their way into the postseason (via CBS News).

They won four out of six games as they stunned San Antonio. This came after they won 61 regular-season games but that didn’t matter. Memphis carried the series with great performances from Zack Randolph and Marc Gasol. They almost finished the series in five games but narrowly lost. It didn’t matter.