Mount Everest (8,848 metres (29,029 ft)) is the world's highest mountain and a particularly desirable peak for mountaineers. However, over 200 people have died trying to climb it.

Source

Wikipedia

Premier League 2011-2012 season stats and team incomes

Source

Data at football-data.co.uk

Financial data at Premier League accounts, 2011-12

This file contains the data used to build a predictive model for the 2015 Belmont Stakes given 25 years of historical Triple Crown racing results.

La Liga Primera División current season 2012-2013 stats (spanish soccer competition first division)

Soccer stats greater than season average, winner made more shots/shots on target/fouls committed/corners/yellow cards/red cards

Source

Data at football-data.co.uk

American League Baseball Salaries (2003)

Source

mathforum.org datasets

A dataset using DVOA-based NFL analytics from Football Outsiders, plus historical Super Bowl performances, point spreads and over/under totals for every Super Bowl since the 1989 season.

As there are limited rows and data in this dataset, for best predictive results you may wish to build an ensemble.

Example dataset about freemium data.

A dataset using DVOA-based NFL analytics from Football Outsiders, plus historical Super Bowl performances, point spreads and over/under totals for every Super Bowl since the 1989 season.

As there are limited rows in this dataset, for best predictive results you may wish to build an ensemble.

La Liga Primera División current season 2012-2013 (spanish soccer competition first division)

Soccer stats, goals, shots, fouls, corners, yellow cards, red cards, match results, winners...

Source

Data at football-data.co.uk