The 2001 MBNA Cal Ripken Jr. 400 was a NASCAR Winston Cup Series stock car race held on September 23, 2001, at Dover Downs International Speedway.
 The race was the 27th of the 2001 NASCAR Winston Cup Series season.
 Dale Jarrett of Yates Racing won the pole position, while Dale Earnhardt, Inc.'s Dale Earnhardt Jr. led the most laps with 193 and won the race.
Ralph Dale Earnhardt Jr. (born October 10, 1974), known professionally as Dale Earnhardt Jr., Dale Jr., or just Junior, is an American professional stock car racing driver and champion team owner.
 He is the son of NASCAR Hall of Fame member Dale Earnhardt Sr. He is also the grandson of both NASCAR driver Ralph Earnhardt and stock car fabricator Robert Gee, the brother of Kelley Earnhardt-Miller, the half-brother of former driver Kerry Earnhardt, the uncle of driver Jeffrey Earnhardt, the stepson of Teresa Earnhardt, and the older half-brother of Taylor Nicole Earnhardt-Putnam.
The 2001 Pepsi 400 was a NASCAR Winston Cup Series stock car race held on July 7, 2001, at Daytona International Speedway in Daytona Beach, Florida.
 The race is the 17th of the 2001 NASCAR Winston Cup Series season.
 The race was the first at Daytona since the 2001 Daytona 500, in which Dale Earnhardt was killed on the final lap.
 Sterling Marlin of Chip Ganassi Racing won the pole position.
 Dale Earnhardt Jr. of Dale Earnhardt, Inc. won the race, while DEI teammate Michael Waltrip and Elliott Sadler finished second and third, respectively.
The Coca-Cola 500 was an exhibition NASCAR stock car race held on November 22, 1998, during the 1998 NASCAR Winston Cup Series season.
 The race took place on the Twin Ring Motegi oval course in the town of Motegi on the main Japanese island of Honshu.
 It was the third straight year that NASCAR held an exhibition race in Japan, previously hosting races on the Suzuka Circuit in 1996 and 1997.
 Teams from the Winston Cup Series, Busch Series, Craftsman Truck Series and Winston West Series made the trip to Japan to compete in the race.
 Four Japanese drivers entered the event, as well.
 The race was also the first in which Dale Earnhardt and his son, Dale Earnhardt Jr. competed against one another in a NASCAR race, driving Nos. 3 and 1 Chevrolets, respectively.
 The pole position was won by Jeremy Mayfield of Penske Racing South, while Mike Skinner of Richard Childress Racing won the race.
 Hendrick Motorsports' Jeff Gordon finished second, while Mayfield finished third.
Ralph Dale Earnhardt Sr. ( ; April 29, 1951 – February 18, 2001), known professionally as Dale Earnhardt, was an American professional stock car racing driver and team owner, best known for his involvement in stock car racing for NASCAR.
 The third child of racing driver Ralph Earnhardt and first of two to Martha Coleman, he began his career in 1975 in the World 600 as part of the Winston Cup Series.
Jeffrey Earnhardt (born June 22, 1989) is an American professional stock car racing driver.
 He currently competes part-time in the Monster Energy NASCAR Cup Series, driving the No. 33 Chevrolet SS for Circle Sport – The Motorsports Group.
From 1998 to 2009, Dale Earnhardt, Inc. (DEI) operated as a NASCAR-related organization in Mooresville, North Carolina, United States.
 The company was founded by Dale Earnhardt and his wife, Teresa Earnhardt.
 Earnhardt was a seven-time Winston Cup champion.
 He died in a crash on the final lap of the 2001 Daytona 500.
 Despite his ownership of the DEI racing team, Earnhardt never drove for his team in the Winston Cup; instead, he raced for his long-time mentor and backer Richard Childress at RCR.
 In the late-2000s, DEI suffered critical financial difficulties when Dale Earnhardt Jr. left and Anheuser-Busch and the United States Army moved their sponsorships to Gillett Evernham Motorsports and the newly formed Stewart-Haas Racing, respectively; DEI consequently merged with Chip Ganassi Racing in 2009 to form Earnhardt Ganassi Racing.
Ronald Lee "Ron" Hornaday Jr. (born June 20, 1958) is a retired American professional stock car racing driver.
 He is the father of former NASCAR driver Ronnie Hornaday, and son of the late Ron Hornaday Sr., a two-time Winston West Champion.
 Hornaday is a four-time champion in the Camping World Truck Series, his most recent coming in 2009.
 He was a long-time driver in NASCAR's Winston West Series, and is a Featherlite Southwest Tour Champion.
 He was noticed by Dale Earnhardt while participating in the NASCAR Winter Heat Series on ESPN2.
Kerry Dale Earnhardt (born December 8, 1969) is a former NASCAR driver and the elder son of seven-time Winston Cup Series champion Dale Earnhardt.
 He is the half-brother of current Cup Series driver Dale Earnhardt Jr. He was employed by Dale Earnhardt, Inc. as a consultant, specializing in driver development, until 2011.
 His younger son, Jeffrey Earnhardt, began racing for DEI in 2007, and currently competes in the Monster Energy NASCAR Cup Series.
 Kerry is known for his physical similarity to his father.
The 2001 Dura Lube 400 was the second stock car race of the 2001 NASCAR Winston Cup Series.
 It was held on February 25, 2001 but ended on February 26 due to a rain delay at North Carolina Speedway, in Richmond County, North Carolina and was the first race to take place after the death of seven-time Winston Cup champion Dale Earnhardt on the last lap of the Daytona 500, and he was commemorated in various ways throughout the race weekend.

Question: Kerry Dale Earnhardt (born December 8, 1969) is a former NASCAR driver and the elder son of seven-time Winston Cup Series champion Dale Earnhardt, his younger son, which American professional stock car racing driver, began racing for DEI in 2007?
Answer: Jeffrey Earnhardt