The Davidson name is legendary in the eventing world, and Buck has focused on following in the footsteps of his father Bruce, an Olympic medalist and the only person to ever win back-to-back World Championships. Though much of his younger years were devoted primarily to baseball, a sports-related injury changed his focus. Always a rider, Davidson began his career as a fox hunter and timber jockey.
Davidson had an impressive history as a young rider. He won the Markham Trophy as the highest placing Young Rider in a USET Championship three times, and was the 1996 Young Rider of the Year. In his CCI4* debut in 1998, he placed sixth at the Rolex Kentucky Three-Day Event on Trans Am A Flirt. The two following years he placed 10th and then fourth at the Rolex Kentucky Three-Day Event with Pajama Game, and in 1999 the pair made their U.S. team debut at the Pan American Games. In 2005, Hyperlite provided Davidson with his very first CCI3* victory at Jersey Fresh.
Ballynoe Castle RM (or Reggie as he is called, after fellow super jock Reggie Miller) has been a star in Davidson’s barn for many years, upon importing him as a young horse, Davidson has always maintained that Reggie is all class. In 2008, Davidson’s faith in the horse was rewarded with an immaculate performance at the CCI3* at Jersey Fresh International where they were second, leading to the pair being named as alternates to the U.S. Olympic Team.
In 2009, Davidson had a banner year, winning horse trials at every level and collecting a number of strong finishes at the international level. With My Boy Bobby, Davidson won the CIC3* divisions at both The Fork and Wits End. The pair was third in the Rolex Kentucky CCI4*, making Davidson the top-placed American, winning him his second Rolex/USEF National CCI4* Championship. Not to be outdone by his stablemate, Ballynoe Castle RM capped off the first half of the season with a top-15 finish in his first CCI4* at Kentucky. He followed up this good result with a pair of second-place CIC3* finishes at Maui Jim and Wits End. In September, Davidson and Reggie traveled to the Land Rover Burghley Horse Trials CCI4* where they were once again in the top 15.
In 2010 Davidson made his World Championship debut as part of the Land Rover U.S. Eventing Team with Ballynoe Castle RM at the Alltech FEI World Equestrian Games ion Lexington, Ky.
Davidson competed across the country as well as overseas in 2011. He and Ballynoe Castle RM completed the Badminton CCI4* and were the highest-placed American pair in 21st place. In the summer, the pair won the CIC3* at Richland Park and Advanced divisions at both the Millbrook Horse Trials and the Morven Park Fall Horse Trials. They also finished second in the CIC3* at The Event at Rebecca Farm and at the Nutrena/USEA American Eventing Championships in the Advanced division. Davidson also piloted Absolute Liberty to Team Gold and Individual Bronze at the 2011 Pan American Games in Guadalajara, Mexico.
Davidson suffered a broken collarbone in February of 2012, but that did not slow him down. He proved he was back at 100% at Jersey Fresh International in early May, earning a fourth-place finish in the CCI3* with Ballynoe Castle RM. Later in the year, the pair also earned third-place finishes in the CIC3* divisions at Richland Park and Plantation Field International Horse Trials.
2013 saw Davidson earn top finishes on multiple horses. With Ballynoe Castle RM, he earned two third-place finishes in CIC3* competition at Red Hills International and The Fork before finishing in fourth place at the Rolex Kentucky Three-Day Event CCI4*, in addition to completing the event with Mar de Amor and Park Trader. He then completed the season with a second-place finish at The Dutta Corp. Fair Hill International CCI3* with Park Trader and a win with Petite Flower at the Galway Downs International CCI3*.
Davidson enjoyed a successful start to his 2014 season earning second- and fourth-place finishes with Ballynoe Castle RM in the CIC3* divisions at the Cloud Eleven~Gavilan North LLC Carolina International and The Fork, respectively. He earned a third-place result with Ballynoe Castle RM and a 12th-place finish with Park Trader at the Rolex Kentucky Three-Day Event presented by Land Rover. The following month Davidson went onto win the Jersey Fresh International CCI3* with Copper Beach. In August, he and Ballynoe Castle RM made their second World Championship appearance as members of the Land Rover U.S. Eventing Team at the Alltech FEI World Equestrian Games. Returning to the U.S., Davidson finished second with Copper Beach and third with Ballynoe Castle RM in the CIC3* division at the Plantation Field International, also winning the CIC2* with Be Mine. At The Dutta Corp. Fair Hill International, Davidson rode The Apprentice to a fifth-place finish in the CCI3*. He then had an impressive second-place finish at the Galway Downs CCI3* with Copper Beach.
Davidson began 2015 with a fifth-place finish in the Red Hills International CIC2* with Be Mine. He was second in The Fork CIC3* with Ballynoe Castle RM. Davison had a winning weekend at the Jersey Fresh International, winning the CCI3* with Ballynoe Castle RM and the CIC2* with Copper Beach. He and Petite Flower finished in fifth place in the CIC3* division at the Land Rover Great Meadow International presented by Adequan. Davidson partnered with Copper Beach and The Apprentice at the Cosequin Stuart Horse Trials CIC2*, finishing second and fifth, respectively. He and The Apprentice traveled west to The Event at Rebecca Farm where they finished third in the inaugural CCI3* division. Back east, Davidson scored top placings at the Richland Park Horse Trials, finishing first with Ballynoe Castle RM and ninth with Copper Beach in the CIC3* division.