The first round of the 2024 Open Championship is now in the books. The day ended with a surprise leader and several favorites shooting well below expectations.Daniel Broom leads the 2024 Open Championship at 6-under. Royal Troon Golf Club once again proved to be an excellent test of golf as only 17 players broke par.2024 Open Championship Day 1 LeaderboardBelow is the Open Championship leaderboard (only members of the top 50 were included):1 Daniel Brown -62 Shane Lowry -53 Justin Thomas -3T4 Alex Noren -2T4 Nicolai Højgaard -2T4 Justin Rose -2T4 Russell Henley -2T4 Xander Schauffele -2T4 Mackenzie Hughes -2T4 Joe Dean -2T11 Adam Scott -1T11 Matt Wallace -1T11 Chris Kirk -1T11 Sepp Straka -1T11 Brooks Koepka -1T11 Matt Fitzpatrick -1T11 Scottie Scheffler -1T18 Calum Scott (a) ET18 Young-han Song ET18 Min Woo Lee ET18 Laurie Canter ET18 Joaquín Niemann ET18 Tony Finau ET18 Maverick McNealy ET18 Thriston Lawrence ET18 Corey Conners ET18 Dean Burmester ET18 Matthew Jordan ET18 Jordan Spieth ET18 Emiliano Grillo ET31 Jesper Svensson +1T31 Thorbjørn Olesen +1T31 Matthieu Pavon +1T31 Robert MacIntyre +1T31 Sean Crocker +1T31 Masahiro Kawamura +1T31 Billy Horschel +1T31 Eric Cole +1T31 Padraig Harrington +1T31 Matthew Dodd-Berry (a) +1T31 Jeunghun Wang +1T42 Tom McKibbin +2T42 Abraham Ancer +2T42 Francesco Molinari +2T42 Matthew Southgate +2T42 Matteo Manassero +2T42 Austin Eckroat +2T42 Aaron Rai +2T42 Jon Rahm +2T42 Brian Harman +2T42 Tyrrell Hatton +2T42 Alexander Björk +2T42 Guido Migliozzi +2T42 Minkyu Kim +2T42 Marcel Siem +2T42 Ryan Fox +2T42 Brendon Todd +2T42 Denny McCarthy +2T42 Adrian Meronk +2T42 Jason Day +2T42 Alex Cejka +2T42 Phil Mickelson +2T42 Patrick Cantlay +2T42 Collin Morikawa +2T42 Cameron Young +2T42 Sami Välimäki +2T42 Luis Masaveu (a) +2T42 Kazuma Kobori +2Daniel Brown carded a bogey-free first round with six birdies to take a surprise lead in the Open Championship. Brown has been a professional since 2017 and has played his entire career in Europe, alternating between the DP World Tour and feeder circuits.The 2024 Open Championship is Brown's full debut in a Major championship. The Englishman had to earn his spot at the final qualifying event in West Lancashire.Shane Lowry is second, one stroke behind Brown. Justin Thomas is third and seven players are tied for fourth.Several of the favorites shot well over par. Cameron Smith (+9), Rory McIlroy (+7) and Bryson DeChambeau (+5) stand out.