Vladimir Guerrero Jr. of the Toronto Blue Jays is working hard in spring training ahead of the new season. Don Mattingly, the legendary former first baseman for the New York Yankees, is assisting him.A video showing Guerrero Jr. going through drills with Mattingly was posted on Talkin' Baseball's Twitter page."Mattingly working with Vladdy Jr."- @TalkinBaseball_Talkin’ Baseball@TalkinBaseball_Mattingly working with Vladdy Jr.72616Mattingly working with Vladdy Jr. https://t.co/dLQXaScAZnSome Yankees fans were not too pleased with this crossover despite Mattingly's current role as bench coach for the Blue Jays."Stop it Don," one user tweeted.Talkin' Yanks@TalkinYanks@TalkinBaseball_ Stop it Don1922@TalkinBaseball_ Stop it Don"History repeats itself, first as a tragedy, second as a farce.""This is worse than when Benedict Arnold betrayed America during the Revolutionary War. Making me sick see the hitman in a Blue Jays uniform," another said.I Win, You Lose@VitoParadeFloat@TalkinBaseball_ This is worse than when Benedict Arnold betrayed America during the Revolutionary War. Making me sick see the hitman in a Blue Jays uniform12@TalkinBaseball_ This is worse than when Benedict Arnold betrayed America during the Revolutionary War. Making me sick see the hitman in a Blue Jays uniformHowever, others were pleased that the young talent would be able to learn and improve his defensive game under the watchful eye of one of the game's best."Donnie Baseball is looking to take Baby Vlad to that next level #SpringTraining #BlueJays #springclips"SpringClips@SpringClipsDonnie Baseball is looking to take Baby Vlad to that next level #SpringTraining #BlueJays #springclips twitter.com/TalkinBaseball…Talkin’ Baseball@TalkinBaseball_Mattingly working with Vladdy Jr.71216Mattingly working with Vladdy Jr. https://t.co/dLQXaScAZnDonnie Baseball is looking to take Baby Vlad to that next level #SpringTraining #BlueJays #springclips twitter.com/TalkinBaseball…"I love Donnie. He was in the National League forever. Him in the AL East coming into Yankee Stadium feels weird."Star@j__star2I love Donnie. He was in the National League forever. Him in the AL East coming into Yankee Stadium feels weird. twitter.com/talkinbaseball…Talkin’ Baseball@TalkinBaseball_Mattingly working with Vladdy Jr.71316Mattingly working with Vladdy Jr. https://t.co/dLQXaScAZnI love Donnie. He was in the National League forever. Him in the AL East coming into Yankee Stadium feels weird. twitter.com/talkinbaseball…"This hurts my heart."Tio Nate@Iam_NateDoggThis hurts my heart twitter.com/talkinbaseball…Talkin’ Baseball@TalkinBaseball_Mattingly working with Vladdy Jr.71316Mattingly working with Vladdy Jr. https://t.co/dLQXaScAZnThis hurts my heart twitter.com/talkinbaseball…"This makes me ill."Eric Kirschner@EricKirschner5@TalkinBaseball_ This makes me ill.@TalkinBaseball_ This makes me ill."I hope Vladdy realizes how lucky he is"Ross Kaufman@RossKaufman7@TalkinBaseball_ I hope Vladdy realizes how lucky he is3@TalkinBaseball_ I hope Vladdy realizes how lucky he isVladimir Guerrero Jr. cautiously optimistic about next seasonVladimir Guerrero Jr. #27 of the Toronto Blue Jays celebrates after being named the Ted Williams Most Valuable Player during the 91st MLB All-Star Game at Coors Field on July 13, 2021 in Denver, Colorado. The American League defeated the National League 5-2.Vladimir Guerrero Jr. refused to give anything away when asked what could be expected from him and the Toronto Blue Jays in 2023.After an underwhelming 2022, Guerrero Jr. is hoping not to get bogged down by expectations before the start of the new MLB season."Last year, I put a lot of pressure on myself," Guerrero told reporters Friday. "As a ball player, you want to get better every year. You all know the numbers I put up in ’21. Last spring training, I came here to try putting up even better numbers, and I think that affected me a little bit. This year, I’m coming here with a plan, and I’m going to trust my talent."This year I'm not going to say anything. You gotta watch it."While Guerrero Jr.'s attacking output faltered last season as compared to 2021, there was a visible improvement in his defensive game. Blue Jays fans will be hoping for a strong showing from their talisman in 2023.