null Baseball Gooooooooooood morning, class! It is I, your totally legitimate and real teacher, Doctor Joe Rivera.If you don't know by now, I hold numerous degrees: one in journalism, one in basket weaving and, of course, a Ph.D in Thuganomics. I also have many leather-bound books and my apartment smells of rich mahogany. But of my many prestigious certificates, my doctorate in Tradeology is the one I'll put into use today. Today's lesson: the San Francisco Giants.MORE: Watch 'ChangeUp,' a new live whiparound show on DAZN With Farhan Zaidi taking the helm of the Giants before the 2019 season, he likely wants to break the whole thing down and build it his way, as is the case with most incoming executives. Trade rumors were rampant during the offseason, with Madison Bumgarner, Joe Panik and Evan Longoria all rumored to be on the block.Even with those guys, no one expects the Giants to compete for a title this year — though they are a hot streak away from being in wild-card talk — so expect the fire sale to come down sooner rather than later.Using a highly complex formula — which is about as confusing as your significant other trying to figure out what they want for dinner — that includes production, contract, position, depth of position in the farm system, durability, trade market and personality, we come up with a player's tradeability grade.With that, please take out your notebooks and pay attention: Here are several of Los Gigantes' big trade pieces and how they grade on the Tradeability Scale.Madison BumgarnerPosition: PitcherContract: Free agent after 2019Tradeability: BBumgarner is the biggest-ticket item entering the trade season, and it's no surprise why. The big lefty has been one of the most consistent pitchers over the better part of a decade, and while injuries have been unkind to him, he's having decent 2019 season. Entering May 21: 4.21 ERA (3.55 FIP), 1.177 WHIP, 5.82 K/BB ratio. Not exactly Bumgarner-like, but productive nonetheless. He's also pitched at least six innings in all of his starts but one.The only potential hurdle in the way of a Bumgarner deal is his strategic no-trade clause, which includes eight teams: the Astros, Braves, Brewers, Cardinals, Cubs, Phillies, Red Sox and Yankees. Unsurprisingly, all eight teams could use his help — and all eight teams are going to be in the playoff mix in some way, whether it's by division or wild-card, this season.MORE: Ranking MadBum's no-trade listThe soon-to-be 30-year-old Bumgarner hits the open market after this year, so if a team feels like he's the final piece to the equation, then it shouldn't hesitate to get a proven postseason guy. It's just hard to put a price on what that's worth in prospects.We've seen Bumgarner show up in big spots in the playoffs, so sticking him in the thick of a playoff race could revitalize him a la Justin Verlander in 2017. At worst, he's a mid-rotation lefty reinforcement who's going to eat innings. We'll likely see the end of the Bumgarner era in the Bay area. It's just a matter of how much a team is willing to give up to get MadBum and whether he signs off on it.Evan LongoriaPosition: Third baseContract: Under contract through 2022; team option for 2023Tradeability: C-Longoria is still a serviceable major leaguer with an above average glove at third base. The power might not be there anymore, (95 OPS+ over the least three seasons), but he's still a positive WAR player for now. The problem is the contract. Longo is under contract until 2022, and he's owed $53 million over the next three years (with some deferred money involved being paid by the Rays), with a $13 million option for 2023 or a $5 million buyout. He'll be entering his Age 37 year in 2023, so it's hard to see a team willing to take the jump for him now, even for veteran presence.That said, Longoria is moveable, but San Francisco is going to get a stomach ache from the amount of money it would have to eat to move him. What's difficult to see as well is Longoria's market: Of teams that will probably be competing for postseason spots, most have third basemen, and Longoria is exclusively a third baseman, playing shortstop once in his career — in 2008.Longoria isn't a guy who's expected to carry an offense anymore, but if you stick him in a lineup and surround him with help, it'd be interesting to see how his bat rebounds. But unless San Francisco is willing to eat a lot of money, a Longo trade seems less likely than others.Joe PanikPosition: Second baseContract: Arbitration eligible in 2020; free agent after 2020Tradeability: B-We're a long way removed from Joe Panik's 2015 season, in which he accrused a 3.3 bWAR in 100 games. Since 2015, Panik has been worth 2.9 bWAR in four seasons (409 games), dealing with a smorgasbord of injuries over that span. Panik is a decent hitter but doesn't have much power. Some of his best seasons came when the Giants were a competent offensive team, including that 2015 year, when San Fran was near the top of the NL in many major offensive categories.Panik, a career 89.5 percent contact hitter, would be a nice fit in a lineup where players need a dose of bat-on-ball to counteract strikeouts. He likely wouldn't cost a lot in prospects or major league capital, either. Panik is a solid defender at second base

as well, notching 4 DRS in a small sample size in 2019. Like Longoria, Panik isn't the type of guy who would carry an offense, but would be a helpful piece in a team's quest for a postseason run.Will SmithPosition: Relief pitcherContract: Free agent following 2019Tradeability: A-Somewhat surprisingly, the Giants' bullpen has been one of the better 'pens in . Entering May 20 games, San Francisco's 3.41 FIP was second in all of the majors behind just Houston. Will Smith has been a big part of that.While there are bad boys in the San Fran bullpen, Smith has been holding it down in the wild, wild west: In 2019, he's pitched to a 0.804 WHIP, 12.9 K/9 and 2.34 FIP.If a team wants to hitch its wagon to Smith in its pursuit of happiness — and a championship — then Smith would be a really nice option out of the bullpen. In 2019, he's been equally tough against left-handed bats and right-handed bats, with a .570 OPS against righties and a svelte .423 OPS vs. lefties. The 29-year-old has been a solid reliever throughout his career, but has seen his best results with the Giants, pitching to a 146 ERA+ in three seasons with the team.With relief pitching still a focus of major league teams (and exponentially more important come the playoffs), it wouldn't surprise many to see The Fresh Prince of Oracle Park in another jersey come July — or sooner.