NL Notes: Mets, Lincecum, Cardinals, Upton

Let's start the last weekend in April with some notes from the National League:

• As expected, offseason acquisition Shaun Marcum has been activated to make his first start for the Mets today, the team announced via Twitter. In a corresponding move, the team optioned 26-year-old lefty Josh Edgin to the minors, where he will try to sort out his poor start to the year. The Mets hope that Marcum, who came to New York on a one-year, $4MM deal, can stabilize the back of the team's rotation. While Matt Harvey has been lights out and Jon Niese has been solid, the remaining Mets starters have combined to allow well over five earned runs per nine innings.
• Even with the mixed results from the team's starting staff, the Mets have gotten off to a fairly promising start. Meanwhile, the Nationals and Phillies have failed to live up to expectations in the early going. While acknowledging it is a long shot, Ken Davidoff of the New York Post looks at what it would take for the Mets to seize any opening should the Nats and Phils continue to underperform. Many variables would have to break right for the Mets, says Davidoff. The club must hold things together and hope that Travis d'Arnaud and Zack Wheeler arrive mid-summer, ready to contribute. (Of course, the d'Arnaud side of this already looks unlikely given his approximately two-month injury timetable.) If that happens, the Mets will face a test of their asserted willingness to take on salary — and/or even deal young talent — to make a run at a postseason appearance.
• In the midst of what MLBTR's Mark Polishuk calls a make or break year, Giants starter Tim Lincecum has put together two consecutive quality starts. As Andrew Baggarly of CSNBayArea.com writes, last night Lincecum struck out nine Padres over seven innings, allowing just two runs. Lincecum, who currently stands ninth in Tim Dierkes's 2014 Free Agent Power Rankings, had struggled mightily in his first three outings. While he still ranks among baseball's worst in BB/9 (5.16), Lincecum has raised his strikeout rate to 9.71 K/9.
• The Cardinals are not currently looking outside the organization to supplement their bullpen, writes Jon Paul Morosi of FOX Sports. While the club waits to learn the fate of injured closer Jason Motte, it has been rewarded for handing larger roles to Edward Mujica and Joe Kelly. GM John Mozeliak says that, while he is open to looking at the trade market, "that would not be in the near future."
• Morosi also addressed the subject of Braves outfielder Justin Upton, wondering why exactly the Diamondbacks decided to trade him. While Diamondbacks managing general partner Ken Kendrick publicly called Upton "an enigma," and manager Kirk Gibson purportedly did not see eye-to-eye with the young slugger, Morosi says there was no single moment that apparently caused a rift. In case you missed it, Upton is off to something of a solid start for his new ballclub.