It can't be defined, but everybody knows what an "X-factor" is. It is the guy who could potentially push his team to another level by preforming above expectations.
Through roughly 10-12 games of the MLB season, every team seems to have an up and coming player, or a mainstay, who is producing at career-high levels and seems capable of elevating his team's play by continuing his hot start. Most of the teams in the MLB don't have real World Series hopes, but the players listed here could help them win it in the future.
Here are 30 players, one for each team, that has had a very hot start and has looked like either a star in the making, or a former star having a career resurgence. Either way, these 30 guys have loved April so far, and hope to be their teams "X-factor".