The veteran starters are rumored to be on the trading block since these clubs are essentially out of contention ahead of a three-game set at Citi Field.Former teammates with the New York Yankees in 2011, Colon and Burnett could both be pitching elsewhere soon since the Mets (50-55) and Phillies (46-59) are the NL East's worst teams leading up to the July 31 trade deadline.Colon (9-8, 4.03 ERA), who agreed to a two-year, $20 million deal in the offseason, gave up two runs over 7 1/3 innings Wednesday to win for the first time in five outings in a 3-2 victory at Seattle.Burnett (6-9, 3.86) signed a deal with Philadelphia in the offseason that guarantees him $22.5 million over two seasons. He was brilliant in his last outing with eight scoreless innings in Wednesday's 3-1 home loss to San Francisco."This is my team," Burnett told MLB's official site last month. "I understand how things work, but I'm trying not to worry about it. I just try to go about my business and enjoy my teammates."Both pitchers have proved their durability by leading their respective teams in innings. The 41-year-old Colon has logged 134, while the 37-year-old Burnett has worked 144 2/3 to rank him among the NL's best.Colon won his lone 2014 start against the Phillies on June 2, surrendering two runs in seven innings in an 11-2 rout at Citizens Bank Park. He has pitched at least seven innings in his last seven outings at home.Burnett's teams have won his last five starts against New York. He's 3-0 with a 2.73 ERA over that stretch after giving up five runs in seven innings May 30 in a 6-5, 14-inning victory at home.New York, which last played at home July 13, capped a 5-5 trip with Sunday's 2-0 victory at Milwaukee to split a four-game set. The Mets took two of three in Seattle in their previous series."It's huge for us," manager Terry Collins said. "When you start the second half with a 10-day road trip and you play two teams that are fighting for the playoffs, it's a big test and our guys rose and played very well."Lucas Duda's two-run homer was all the offense the Mets needed. Duda has homered four times in his last six games.Duda has a double in two at-bats versus Burnett, who has limited Mets star David Wright to three hits in 24 at-bats with 11 strikeouts.Philadelphia slugger Ryan Howard hit a two-run homer in Sunday's 4-2 win over Arizona. He is 3 for 8 since returning to the lineup after being benched for three games by manager Ryne Sandberg."These are a couple of games he can build on and continue to contribute and improve and help the team out," Sandberg said.Howard is 0 for 2 against Colon this year after homering twice in two at-bats in the only previous meeting between the two in 2008.The Mets have won six of nine against the Phillies.