The Oklahoma City Thunder have been in a rebuilding phase for a while now. Their GM Sam Presti has accumulated a plethora of draft picks dating till 2027 and their future is brighter than other rebuilding teams like the Houston Rockets or Orlando Magic.The team is looking ahead and is simply not in playoff contention right now, so expect another mediocre season from the Thunder.They drafted Josh Giddey (6th), Tre Mann (18th), Jeremiah Robinson-Earl (32nd) and Aaron Wiggins (55th) in the 2021 NBA Draft. They could have drafted gifted center Alperen Sengun as well, but traded his rights to Houston in exchange for two future picks.Joe Mussatto@joe_mussattoNew Thunder jersey numbersJosh Giddey: No. 3 Aaron Wiggins: No. 21Tre Mann: No. 23Jeremiah Robinson-Earl: No. 50 (first in Thunder history)01:43 AM · Jul 31, 202116016New Thunder jersey numbersJosh Giddey: No. 3 Aaron Wiggins: No. 21Tre Mann: No. 23Jeremiah Robinson-Earl: No. 50 (first in Thunder history)On that note, let's take a look at the Oklahoma City Thunder's roster and key dates as they head into the 2021-22 NBA season.Oklahoma City Thunder's roster for the 2021-22 NBA seasonShai Gilgeous-Alexander and Lu Dort of the Oklahoma City Thunder [Source: Yahoo Sports]They have blossoming stars in Shai Gilgeous-Alexander and Lu Dort and have their lottery selection, Josh Giddey, who is one of the best playmakers in the 2021 NBA draft class.The first-round picks - Giddey and Mann - are expectedly on guaranteed deals. The Thunder's second-round picks - Robinson-Earl and Wiggins - signed a multi-year deal and a two-way contract respectively.Shams Charania@ShamsCharaniaOklahoma City Thunder’s Jeremiah Robinson-Earl — the No. 32 pick in the 2021 NBA draft — has agreed to a four-year, $8 million rookie deal, sources tell @TheAthletic @Stadium.02:05 AM · Aug 11, 20216108442Oklahoma City Thunder’s Jeremiah Robinson-Earl — the No. 32 pick in the 2021 NBA draft — has agreed to a four-year, $8 million rookie deal, sources tell @TheAthletic @Stadium.Here is the Oklahoma City Thunder's roster for the 2021-22 NBA season:Player Name:Position:Years in NBA:Shai Gilgeous-AlexanderGuard3Darius BazleyForward2Luguentz DortGuard2Aleksej PokusevskiForward1Josh GiddeyGuardRTheo MaledonGuard1Gabriel DeckForward1Derrick FavorsCenter11Ty JeromeGuard2Vit KrejciGuardRTre MannGuardRJeremiah Robinson-EarlForwardRMike MuscalaCenter8Kenrich WilliamsForward3Isaiah RobyForward2Paul Watson (Two-way)Guard2Aaron Wiggins (Two-way)GuardRJaylen HoardForwardRMamadi DiakiteForwardRPaul Watson is also on a two-way contract along with Aaron Wiggins, whereas Jaylen Hoard is on a non-guaranteed deal and will likely fight for a roster spot in the training camp. Moreover, the Thunder claimed Mamadi Diakite off waivers and waived forward Charlie Brown Jr. earlier this week.The Old Man Game@TheOldManGame#Thunder claim Mamadi Diakite and waive Charlie Brown Jr.:07:39 AM · Sep 27, 202161#Thunder claim Mamadi Diakite and waive Charlie Brown Jr.: https://t.co/n7eZtYb56ANBA rules allow for a 15-man roster along with two players on two-way deals, so this lineup is bound to be altered before the regular season begins.Key dates for Oklahoma City Thunder entering 2021-22 NBA seasonMedia Day: September 27th, 2021 - Monday.Training Camp Start Date: September 28th, 2021 - Tuesday.Season Opener: Oklahoma City Thunder vs Utah Jazz (October 20th, 2021 - Wednesday, 9:00 PM ET).NBA Central@TheNBACentralMedia Day begins tomorrow 🔥8:11 PM · Sep 26, 20213150355Media Day begins tomorrow 🔥 https://t.co/QFMxxFHdCUThe Oklahoma City Thunder's season opener is against the Utah Jazz at Vivint Arena in Salt Lake City. Their home-opener is against the Philadelphia 76ers on October 24th, 2021.Oklahoma City Thunder's preseason schedule and datesEven though the team isn't entering the 2021-22 NBA season with playoff aspirations, the coach still has to figure out his rotations and lineups to ensure that each young player gets decent playing time and they develop at a great pace.The preseason is a great way for the coaching staff to figure that out and it also gives the fans a glimpse of what next season is going to look like.Here is the Oklahoma City Thunder's preseason schedule:Date and TimeMatchTVMonday, 10/4/21, 8:00 PM ETCharlotte Hornets vs Oklahoma City ThunderBally Sports OklahomaSunday, 10/10/21, 7:30 PM ETOklahoma City Thunder vs Milwaukee BucksBally Sports OklahomaWednesday, 10/13/21, 8:00 PM ETDenver Nuggets vs Oklahoma City ThunderBally Sports OklahomaThursday, 10/14/21, 8:00 PM ETDenver Nuggets vs Oklahoma City ThunderBally Sports OklahomaThe Oklahoma City Thunder's preseason schedule is unlike most teams. They have a five-day gap between their first and second games and then they play the same team, the Denver Nuggets, on back-to-back nights.The official TV schedule is not out yet, but we predict that the Oklahoma City Thunder's home broadcast channel, Bally Sports Oklahoma, will air the games.Also check out: Complete NBA Preseason TV Schedule for 2021