Holliday entered his senior year in 2022 as a top prospect for the upcoming draft.[7][8][9] During a game against Union High School, he hit three home runs.[10] In another game, he hit two home runs in the same inning.[11] He finished the season batting .685 with 17 home runs, 79 RBIs, 29 doubles, and 30 stolen bases over 40 games.[12] He set a national record for hits in a season for an amateur player with 89, surpassing the previous record of 88 set by J. T. Realmuto in 2010.[13] He was named the Oklahoma Gatorade Baseball Player of the Year.[14] He was the third in his family to win the award alongside his father and uncle.[15] He was also awarded an ABCA/Rawlings Gold Glove.[16]
Holliday began the 2023 season with the Shorebirds, where he batted .396/.522/.660 with six doubles, one triple, two home runs and 16 RBIs in 14 games.[23][24] He was promoted twice during the first four months, first to the High–A Aberdeen IronBirds on April 24 and then to the Double–A Bowie Baysox on July 9.[25][26] His slash line with the Ironbirds was .314/.452/.488 with 11 doubles, five triples, five home runs, and 35 RBIs in 57 games.[24] He hit .338/.421/.507 with nine doubles, three triples, three home runs, and 15 RBIs in 36 games with the Baysox before his promotion to the Triple–A Norfolk Tides on September 4.[27] In 18 games for Norfolk, he batted .267/.396/.400 with two home runs and nine RBIs. Following the season, Holliday was named the Baseball America Minor League Player of the Year.[28]
Invited to spring training in 2024 as a non-roster player,[29] the Orioles assigned Holliday to Norfolk for the start of the season.[30] He batted .333/.482/.595 with two home runs through ten Triple-A games in 2024 and has a career .321 average and .949 on-base plus slugging (OPS) in Minor League Baseball.[31]
Major leagues
On April 10, 2024, the Baltimore Orioles selected Holliday's contract and promoted him to the major leagues for the first time.[32] He was assigned the no. 7 uniform and made his major league debut that night as a second baseman[33] against the Boston Red Sox and went 0–4 with 1 RBI at the plate.[34] He knocked his first major league hit in the game against Milwaukee Brewers, and later scored the go-ahead run.[35] After batting 2-for-34 (.059) in 10 games, the Orioles optioned Holliday to Norfolk on April 26.[36]
Holliday slashed .259/.421/.455 with 20 doubles, eight home runs, and 29 RBI in 63 games with the Tides prior to being recalled by the Orioles for a second time on July 31.[37] He hit his first major-league home run later that day, a one-out grand slam onto Eutaw Street off Yerry Rodríguez in the fifth inning of a 10–4 home win over the Toronto Blue Jays.[38] He achieved his first four-hit MLB game in a 12–10 home loss to the Red Sox on August 16, 2024.[39] The final stats in his MLB rookie campaign were .189/.255/.311/.565 in 60 games.[40]