Oklahoma City Thunder were the favorites before tip-off for this one, due to their impressive record against fellow Northwestern teams, with a record of 6-0 going into the game against the opposition from the same division.
But in a battle of the point guards, the Portland Trail Blazers came out on top thanks to a rallying display in the fourth quarter, taking the game 115-110.
The home team had an inferior shooting percentage of just 42.0 percent compared to the Thunder's 48.7 percent, but the 100 field goal's attempted from the Blazers compensated.
Ed Davis and Allen Crabbe both reached double figures for the home side from the bench with 10 and 11 points respectively, whereas Dion Waiters' six was the best any Thunder substitute could come up with.
Russell Westbrook was just shy of a fourth triple-double for the season, with his stats lining up as 25 points, 15 assists and nine rebounds. His partner in crime, Kevin Durant, scored 28 points, meaning he has now scored 20 points in 23 successive games for the Thunder. In the last five encounters against Portland, Durant has sunk 20 or more points. Steven Adams would finish with a double-double of 17 points (6-of-6 shooting from the field) and 10 rebounds, but it wasn't enough to put Oklahoma City over the top.
C.J. McCollum also hit 22 points, seven rebounds and six assists, as the 24 year old proved that Portland were not a one man team.
Damian Lillard was the one who stole the show at the Moda Center though, thanks to impressive, and unmatched, shooting from deep. He scored 31 points for the game, including a career-high eight three-pointers, with five of those coming in the last 3:07, as the Trail Blazers overturned a 103-95 deficit following Andre Roberson's only three of the game.
It started a lot less thrilling than it ended, with Adams' one-handed dunk the best showing as Oklahoma City led by just one point after the first quarter, 27-26.
The end of the second saw the Blazers ahead, leading by six with the Thunder scoring just 19 for the quarter. Star man Russell Westbrook had just two points going into the break.
Damian Lillard opened the second half with eight points in just two minutes as the Trail Blazers extended their lead to ten, making it 65-55. The Thunder weren't down and out though, with the impressive scoring of Durant and Adams slicing that lead to two.
Oklahoma then took the lead but some incisive shooting and a buzzer beating three-pointer from McCollum left the Thunder with just a five point lead, despite shooting a game-high 39 for the quarter.
The player of the game Damian Lillard came into his element in the final quarter though, scoring 17 of this 31 game points to overturn the Thunder lead. The 25-year-old point guard hit three consecutive three-pointers on top of Allen Crabbe's shot from deep, as a determined Portland team ended their three game losing streak, taking it by five points by the end of fourth.
Despite the result, the Thunder remain third in the Western Conference.
Oklahoma City Thunder: 01/12 at Minnesota Timberwolves
Portland Trail Blazers: 01/13 host Utah Jazz