With Steph Curry, Jimmy Butler and Draymond Green all out with injuries, the Cleveland Cavaliers were the overwhelming favorites to roll to an easy win on Saturday. However, backed by Pat Spencer, the Golden State Warriors pulled off an upset, clinching a 99-94 victory at the Rocket Arena.Spencer made the first start of his career and wasted no time in proving his worth. He delivered a career-high 19 points, with 12 coming in the fourth quarter, and added four rebounds and seven assists.Spencer’s unexpected heroics left fans in awe, with social media exploding with positive reactions.“Deserves respect 😤,” @jinthirty captioned a post that also consisted Spencer’s highlight reel.“Cavs really lost to Mr. Beast 🤦🏽‍♂️,” @robbyhask said.“Pat Spencer is your friend‘s older brother who comes home from college for the summer and absolutely destroys you during pick-up. Ha,” @JakeSchuermanTV said.“I used to laugh at Pat Spencer. I don't anymore. He's convinced me he's a legit backup point guard in this league. He's very good at running an offense. A valuable player who needs to play,” @BillWillbourn1 wrote.“Efficient for reals. He is much better then Podz,” @Deez4sho78 said.“Pat Spencer is a demon,” @babyfacedubs said.Besides their stars, the Warriors had even more names missing, including De'Anthony Melton, Alex Toohey, LJ Cryer and Al Horford. Helping Spencer lead the Warriors to a win, Buddy Hield and Quentin Post stepped up with notable contributions as well. They combined for 25 points and 16 rebounds, resulting in Golden State’s improving their record to .500.Steve Kerr hilariously reacts to Pat Spencer’s game-winning performanceSteve Kerr knows exactly how valuable Pat Spencer has become for the Golden State Warriors. The backup point guard has been on a strong run, averaging 17.3 points, 3.6 rebounds and 5.6 assists over his last three games. While reflecting on Spencer’s recent rise, Kerr had an NSFW comment in the postgame interview:"I think his coach realized that Pat is that motherf**ker. I think that became clear. Sorry, am I allowed to say that? Am I gonna get in trouble?"Spencer’s growth during the first quarter of the season has been encouraging for the Warriors. If the opportunity comes after freeing up a roster spot, the front office would love to move the 29-year-old from his current two-way deal to a full NBA contract.