John Nelson (baseball)
John Clark Nelson( born March 3, 1979 in Denton, Texas) is a former Major League Baseball shortstop with the St. Louis Cardinals.
Nelson played college baseball for the University of Kansas.
In 1998, he played collegiate summer baseball with the Falmouth Commodores of the Cape Cod Baseball League, and returned to the league in 1999 to play for the Harwich Mariners.
He was selected by the Cardinals in the 8th round of the 2001 MLB Draft.
Originally an outfielder, the St. Louis Cardinals converted him to a shortstop.
Nelson was promoted to the Cardinals on September 5, 2006, wearing the number 62, and made his major league debut on September 7, striking out against the Arizona Diamondbacks' Greg Aquino.
In his first big- league action he went 0- 5 with 4 strikeouts.
He also pinch- ran 3 times and scored 2 runs, playing one game at shortstop and one game at first base.
In 2008, he signed with the Lancaster Barnstormers of the Atlantic League of Professional Baseball.
Wale Adebanwi
Wale Adebanwi( born 1969) is a Nigerian- born first Black Rhodes Professor at St Antony's College, Oxford.
John Nelson (physician)
John Nelson is a physician who served as president of the American Medical Association.
Wesley Barresi
Wesley Barresi( born 3 May 1984) is a South African born first- class and Netherlands international cricketer.
He is a right- handed wicket keeper- batsman and also bowls right- arm offbreak.
Henry Moore (cricketer)
Henry Walter Moore( 1849 – 20 August 1916) was an English- born first- class cricketer who spent most of his life in New Zealand.
John Nelson (footballer)
John Nelson( born 1 February 1934) is a former Australian rules footballer who played with St Kilda in the Victorian Football League( VFL).
David P. Calleo
David P. Calleo( born 19 July 1934) is an American political scientist, based at the Johns Hopkins University School of Advanced International Studies, where he holds the titles of Dean Acheson Professor and University Professor.
He served as director of the SAIS European Studies program for more than 40 years, from 1968 through May 2012.
Calleo is a noted American theorist on Europe and its future.
John McMahon (Surrey and Somerset cricketer)
John William Joseph McMahon( 28 December 1917 – 8 May 2001) was an Australian- born first- class cricketer who played for Surrey and Somerset in England from 1947 to 1957.
John Nelson (soccer, born 1998)
John Nelson( born July 11, 1998) is an American soccer player who plays as a defender for FC Dallas in Major League Soccer.
Hartley Lobban
Hartley W Lobban (9 May 1926 – 15 October 2004) was a Jamaican-born first-class cricketer who played 17 matches for Worcestershire in the early 1950s.

Question: Who was born first out of John Nelson (Baseball) and David P. Calleo?
Answer: David P. Calleo