All Major League Baseball prospects who are hot at any given moment are precious commodities.

For contenders, they're also expendable.

We're going to look at 10 prospects whom teams should be prepared to sell high on in the upcoming trade season. These are players who either came into 2018 with high stock or who have already dramatically boosted their stock with their performances. Either way, they serve their parent clubs better as trade chips than as potential reinforcements.

We'll go team by team in alphabetical order by city.

Boston Red Sox: Jalen Beeks

The Boston Red Sox's farm system isn't deep these days, and Jalen Beeks wasn't even regarded as one of its best players coming into the year.