Brian Harman is on a hot birdie-making streak on the second day of the Open Championship. In the 10 holes played so far, Harman has sunk four birdies, all of which came back-to-back from holes 2 to 5.Harman, who made his eighth start at the Open Championship on Thursday, July 20, carded a 4-under 67 to finish the day at T4. He carried forward his first-round momentum on Friday and started displaying his intentions from the start.After making a hat-trick of birdies, Harman was on the par-5, 528-yard fifth hole. His first shot went 260 yards to the fairway. The second shot landed in the rough, 32 yards away from the cup. His third shot was a low chip that had enough power to land the ball just a few inches away from the cup. The fans at Royal Liverpool applauded the 36-year-old golfer for his incredible precision.The Open@TheOpenThe birdie streak continues.Brian Harman now leads by three.theopen.com/leaderboard pic.twitter.com/v2SaKMOOIc4210The birdie streak continues.Brian Harman now leads by three.theopen.com/leaderboard pic.twitter.com/v2SaKMOOIcHarman has finished the first half of the second round and is at 8-under, leading Christo Lamprecht and Tommy Fleetwood by three strokes. However, they have yet to tee off in the second round of the Open Championship. Emiliano Grillo, who also shared the first-round lead, is through 11 holes on Day 2 but has slipped four spots as of now.Harman entered the Open Championship after a T12 finish at the Scottish Open last week. He has been in great form recently and finished in the top 10 in two of his last three starts. The American's first round at Royal Liverpool also included five birdies and just a single bogey. It will be interesting to see if he can maintain his momentum over the next two days as well.How has Brian Harman performed in the 2022-23 season?Brian Harman was the runner-up at the 2023 Travelers ChampionshipBrian Harman started the year with mediocre performances, but it seems he has found his rhythm over the past few weeks. Since the Masters, he has had three top-10 finishes, including a runner-up finish at the Travelers Championship, where he fell short by three strokes.This season, the two-time PGA Tour winner has made 15 cuts in 23 starts. Although he didn't secure a win, he came close three times at the Travelers, the World Wide Technology Championship 2022, and the RSM Classic 2022. He has made 10 top-25 finishes and currently sits at 18th in the FedEx Cup standings.Here are Brian Harman's results in the 2022–23 season:Shriners Children's Open: T15The CJ Cup in South Carolina: T23World Wide Technology Championship: 2The RSM Classic: T2Sentry Tournament of Champions: T16Sony Open in Hawaii: T32The American Express: CUTWM Phoenix Open: T42The Genesis Invitational: CUTArnold Palmer Invitational: CUTTHE PLAYERS Championship: T44Valspar Championship: CUTWorld Golf Championships-Dell Technologies Match Play: T17Masters Tournament: CUTRBC Heritage: T7Wells Fargo Championship: CUTPGA Championship: CUTCharles Schwab Challenge: T29The Memorial Tournament: CUTU.S. Open: T43Travelers Championship: T2Rocket Mortgage Classic: T9Genesis Scottish Open: T12