Champion mares Rachel Alexandra and Zenyatta lead the list of 2016 inductees into the US Racing Hall of Fame announced on Monday.

Also elected into this year’s class is multiple Eclipse Award-winning trainer Steve Asmussen and multiple Eclipse Award-winning jockey Ramon Dominguez.

The electees will be inducted into the Hall of Fame on August 12 in a ceremony at the Fasig-Tipton sales pavilion in Saratoga.

Originally racing for breeder Dolphus Morrison and trainer Hal Wiggins, Rachel Alexandra’s career highlight was her amazing 20 1/4 lengths in the 2009 GI Kentucky Oaks.

Sold privately to Jess Jackson’s Stonestreet Stables and Harold McCormick following her Classic victory, Rachel Alexandra went on to win that year’s G1 Preakness Stakles, G1 Mother Goose Stakes and G1 Haskell Invitational before defeating older males in the G1 Woodward Stakes at Saratoga under the tutelage of fellow inductee Steve Asmussen.

She was named champion 3YO filly and Horse of the Year that season.

Zenyatta became the first female to win the G1 Breeders’ Cup Classic with her electrifying victory over Gio Ponti in 2009.

The charismatic mare was named champion older mare in 2008, 2009 and 2010 and Horse of the Year in 2010, winning 13 G1 events during her career and suffering only one loss in her spectacular 20-race career when a heartbreaking runner-up to Blame in the 2010 Breeders’ Cup Classic.

The 39-year-old Ramon Dominguez captured the Eclipse Award as the nation’s top jockey in 2010, 2011 and 2012. He led all North American riders in earnings each of those years, setting a record of $25,639,432 in 2012.

Dominguez led all jockeys in wins in 2001 and 2003 and was second in wins on seven other occasions. He won a total of 20 individual meet riding titles on the New York Racing Association circuit, including a record 68 wins at Saratoga in 2012.

Steve Asmussen, who won the Eclipse Award as the nation’s outstanding trainer in 2008 and 2009, has led all North American trainers in wins nine times and earnings three times.

He has ranked in the top 10 in both wins and earnings every year since 2000. In addition to Rachel Alexandra, Asmussen trained 2007 and 2008 Horse of the Year Curlin, as well as champions Kodiak Kowboy, My Miss Aurelia and Untapable.

The contemporary electees were chosen from a nationwide voting panel comprised of 188 racing writers, broadcasters, industry officials and historians from a group of 10 finalists selected by the Hall of Fame’s 16-member Nominating Committee.