Matt Roberts/Getty ImagesAs we begin the final weekend of the 2018 MLB regular season http://www.astrosfanproshop.com/authentic-evan-gattis-jersey , the vast majority of teams have already turned their attention to 2019, and their respective fanbases are no doubt doing the same.For teams not headed to the postseason, work has no doubt already begun on assessing this year's crop of free agents.Superstars Bryce Harper and Manny Machado are the headliners of the class and could be headed for record deals thanks to their age an impressive track records to date.However, the class by no means begins and ends with that duo, as there's a wealth of potential game-changing talent set to hit the open market.We've rounded up some of the latest rumors surrounding a few of the top names who could be on the move this winter.Matt Harvey Won't Return to the New York MetsAndy Lyons/Getty ImagesWhen asked about the possibility of returning to the Cincinnati Reds in free agency recently, Matt Harvey offered up the following to Mark Sheldon of MLB.com:"Absolutely. There's only one team out there I would not sign with. That's about it."It's not hard to piece that one together.Once a budding superstar for the New York Mets, Harvey's decline was a drastic one as injuries derailed his career.After struggling to a 6.70 ERA over 92.2 innings in 2017, he was quickly demoted to the bullpen this season after a similarly rocky start and eventually traded to the Reds in exchange for catcher Devin Mesoraco.While he hasn't regained his previously elite form, he has been a serviceable starter since the trade, going 7-7 with a 4.50 ERA (4.33 FIP) and 1.25 WHIP with 111 strikeouts in 128 innings.Now he'll hit the open market for the first time, and while he's not on the same level as top-tier options like Clayton Kershaw, Patrick Corbin, Dallas Keuchel and Charlie Morton Carlos Correa Jersey , he's an intriguing buy-low option.He just won't be an option for the Mets.Prediction:Harvey re-signs with the Reds on a two-year, $15 million deal.International Star Victor Victor Mesa to Host a ShowcaseMatt Roberts/Getty ImagesWhile he won't drum up the same offseason frenzy that Shohei Ohtani created last offseason prior to signing with the Los Angeles Angels, Cuban outfielder Victor Victor Mesa has a chance to be an impact player in his own right.He'll be joined in the showcase by his 16-year-old brother Victor Mesa Jr. and hard-throwing right-hander Sandy Gaston.Jesse Sanchez JesseSanchezMLBBREAKING: The Mesa showcase will be stateside.International prospects Victor Victor Mesa and Victor Mesa Jr. will work out for all 30 teams on 10/5 at Marlins Park. RHP Sandy Gaston, who is also from Cuba, will also work out for teams. ldbzADPY62The older Mesa is considered by most to be the top international talent available this offseason.During his last full season playing in the Cuban National Series in 2016-17, he hit .354/.399/.539 with 40 steals in 70 games.Ben Badler ofBaseball Americaoffered up the following scouting report back in May:"Mesa,21,is a comparable player to Nationals center fielderVictor Robles,theNo. 5prospectonBaseball America's Top 100 Prospects list. He's a premium defender in center fieldwho at his best has shown70 speed and at least a70 arm on the 20-80 scale.He getsquick reads off the bat and takes sharp routes to cover plenty of ground in center field and make highlight-reel catches, winning a gold glove award in Cuba when he was 17."The Orioles ($6.5 million), Marlins ($4.3 million), Rays ($3.6 million) and Dodgers ($2.78 million) have the most remaining bonus poll money to spend, according to Jesse Sanchez of MLB.com.With the O's making a newfound commitment to international scouting and the Marlins having a strong tie to the Cuban community Dallas Keuchel Jersey , those two look like the favorites.Prediction: Victor VictorMesa signs with the Marlins.Former All-Star Closer Trevor Rosenthal to Hold WorkoutJeff Curry/Getty ImagesA few days before the Mesa brothers show off their talents to a hoard of MLB scouts, right-hander Trevor Rosenthal will hold a showcase of his own.Trevor Rosenthal TrevRosenthalI鈥檒l be doing a workout for teams next Wednesday, October 3rd. 11am UC Irvine in Irvine, CA. Looking forward to this and the 2019 season.The 28-year-old has been working his way back from Tommy John surgery all season, and he's posted a few video clips of himself on the comeback trail.Trevor Rosenthal TrevRosenthalI鈥檒l be doing a workout for teams in early October. I鈥檒l post the details as we get closer. Everything has gone so well this year. I鈥檓 anxious to see what the future holds! SesB7mNl25Rosenthal was at his best in 2015, when he nailed down 48 of 51 save chances with a 2.10 ERA, 1.27 WHIP and 10.9 K/9 to earn his lone All-Star appearance and finish 17th in NL MVP voting.After a rocky 2016 season, he rebounded nicely in 2017 with a 3.40 ERA and 14.3 K/9 in 50 appearances, as he eventually moved back into the closer's role after starting the season in a setup capacity.However, the elbow injury that eventually required surgery cut his season short and spelled an end to his time in St. Louis, as he was non-tendered last offseason.He has a chance to be a great under-the-radar signing for a team looking for late-inning help but not looking to break the bank with a run at Craig Kimbrel or Andrew Miller.Prediction:Rosenthal signs with the Braves on a one-year, $5 million deal that includes a mutual option for 2020.All stats courtesy of Baseball Referenceand accurate through Sept. 27. Washington Nationals star Stephen Strasburg was forced to return to the disabled list after just one start back on the field, but the latest issue might not be as bad as initially anticipated.According to Jon Heyman of Fancred http://www.astrosfanproshop.com/authentic-jeff-bagwell-jersey , the injury has been described as an inflamed nerve. Whilethe team originally feared a six-to-eight week timeline for his return, Heyman reported he could be back "much sooner."The pitcher missed about six weeks due to a shoulder injury before returning on July 20. He was then placed back on the DL last Thursday, retroactive to July 22, with a pinched nerve in his neck.He allowed six earned runs in 4.1 innings in a loss to the Atlanta Braves in his only start since early June.While another DL stint isn't ideal, at least the latest prognosis is a positive one for a player who has struggled to stay on the field throughout his career.Michael Ginnitti ofSpotrac provided a breakdown of Strasburg's injury history:Spotrac spotracWashington #Nationals SP Stephen Strasburg finds himself on the DL for the 12th time since joining the league back in 2009. Of his $80M made to date, nearly $17M has been earned while injured.Considering he is in just the second season of a seven-year, $175 million deal, this is not a trend the Nationals want to see continue.What is even more disappointing is Strasburg's struggles when he is on the mound. In 14 starts this season, the 30-year-old has a 6-7 record with a 3.90 ERA, which would be a career-high for a season.With the rest of the Nationals rotation besides Max Scherzer also struggling with consistency, it's no wonder the team is just 52-53 this season despite high expectations.The squad will hope Strasburg can overcome the latest injury and provide much-needed help for the stretch run.