The non-waiver trade deadline is July 31 at 4 p.m. ET.
Shields still has $66 million left on his contract over the next three years. Kimbrel, who was traded by the Atlanta Braves, is in the second year of a four-year, $42 million contract, and Cashner is in the final season of his contract.
Other players who are in the final season of their contract and could be potentially be traded are outfielders Justin Upton and Will Venable, and starting pitcher Ian Kennedy. Reliever Joaquin Benoit has a club option for next season.
San Diego started the season with a $107 million payroll after acquiring Kimbrel and the Uptons from Atlanta and bringing in outfielder Matt Kemp from the Los Angeles Dodgers. Last season, the Padres had a opening-day payroll of $90 million.
The Padres (47–52) are 8 1/2 games back of the Dodgers in the National League West and 7 1/2 games back from the second Wild Card spot in the NL.
- Scooby Axson