Because the Twins still owe Marquis the balance of his $3 million salary, the deal with the Padres is for the prorated major league minimum.
Marquis' stint with Minnesota ended last Tuesday when the Twins removed him from the roster after just seven starts.
Marquis was 2-4 with an abysmal 8.47 ERA. The veteran gave up 52 hits with 14 walks and only 12 strikeouts in 34 innings, his first foray into the American League.
Marquis was having one of the best seasons of his career in 2011 with the Washington Nationals, going 8-5 with a 3.95 ERA in 20 starts, but he was traded at the end of July and struggled in three appearances for the Arizona Diamondbacks before his leg was broken by a line drive back to the mound.
His young daughter was seriously hurt in a bicycle accident in March, pulling Marquis to his home in New York. He was late to join the Twins for the regular season after taking extra time in spring training to try to get back in a groove. The 33-year-old is 106-106 for his career with a 4.63 ERA.
Information from The Associated Press was used in this report.