Orange County mobile communications magnate Gary Jabara and Los Angeles investor Steve Kaplan are among those still in the running to buy the team, joining the Peter O'Malley family bid.
Jabara is the founder and CEO of Mobilitie, which invests in cell towers, fiber networks and antennae systems for wireless phones and communications. He previously was a partner at Deloitte & Touche and oversaw the firm's wireless real estate and infrastructure.
Kaplan is a principal and portfolio manager at Oaktree Capital Management, an investment firm. He previously was partner in a law firm and managing director of TCW, another investment firm.
The bid by the O'Malley family, which once owned the Dodgers, has been joined by pro golfer Phil Mickelson.
The team is expected to fetch around $600 million to $800 million, according to multiple reports.
On the field, the Padres completed a three-game sweep at Seattle with a 6-2 win Thursday night. It's the first time the last-place Padres have won three games in a row all season.