As of Tuesday morning, there are 19 teams that are within three games of an MLB postseason spot. The Giants are not one of them, which means they’ll be popular at the trade deadline. I’d like to think that every July, everyone in the front office has bandoliers strapped to them with 29 cell phones, one for every other team. It might make them look like tactical cosplaying dorks, but one can never be too careful. This might be the most important deadline for the Giants since they traded for Jake Peavy in 2014.Let’s look at these contending teams, then. Ooooh, congratulations on your non-disaster of a season, I’m sure it’s really exciting [rolls eyes]. No, seriously, congrats, now cough up your best prospects.I set the cutoff for these teams at “within three games of the playoffs” because that includes the Astros and Mariners, who are explicitly buying, and excludes teams like the Tigers and Reds, who can’t possibly have an all-in strategy right now.Also, I’m using Wins Above Average for the team ranks, mostly because it’s just so danged convenient over at Baseball-Reference to do it by team and position, but also because it’s a rock-solid stat that includes the state of the entire team, not just the starter at a position.Here’s your primer to the next week. This team needs X badly. The Giants have X. They should chat.New York YankeesNeeds: 3B (25th in WAA)