Another anectdote (and I admit, anecdotes are just that, not proof of anything).....of why teams should love proven MLB players more than prospects, and be willing trade prospects sooner rather than later sometimes: from Fangraphs today: A couple of years ago, Logan Morrison was one of the best prospects in baseball. Before the 2009 season, Baseball America rated him the #18 prospect in baseball, and before the 2010 season, he was rated 20th overall. Then as a 22 year old rookie in 2010, he hit .283/.390/.447 in his debut, good for a 129 wRC+. He took walks, he made contact, he hit for some doubles power, and he looked like one of the game’s best young hitters. And it’s been all downhill since then.