Prospect Jesmuel Valentin traded to Philadelphia Phillies.

A day late on this, but: The Dodgers sent infielder Jesmuel Valentin to the Philadelphia Phillies on Saturday as one of two players to be named (or cash considerations) in the August 7 trade for Roberto Hernandez.

Valentin, 20, was batting .282 with seven home runs and 47 RBI in 107 games with Single-A Great Lakes in his third professional season after being selected by the Dodgers with the 51st overall pick in the supplemental round in the 2012 draft. On Friday, Valentin went 3 for 4 with a home run; he had a .300/.355/.471 slash line in his final 28 days in the Dodgers’ organization.

Valentin is the son of former major-league player Jose Valentin.

Hernandez has gone 1-0 with a 2.25 ERA in two starts with the Dodgers since the trade.

Devising the Dodgers’ composite prospect rankings.

Before the famous economist/statistician/sabrmetrician Nate Silver was chosen as one of Time Magazine’s 100 most influential people of 2009, he crunched baseball stats for BaseballProspectus.com. He found more success in the political arena by taking an old idea and adapting it to a new subject.

Specifically, Silver aggregated just about every pre-election poll he could find, giving each one more or less weight through a formula he devised, to come up with a reliably accurate “prediction model” for the major U.S. elections.

With a nod to Nate, I decided to aggregate four recently released lists ranking the Dodgers prospects — Baseball America, FanGraphs, Minor League Ball and Baseball Prospectus — into a composite ranking. There’s no weighting formula and this is no prediction model. (Besides, success in baseball can’t be defined objectively; if it were, there wouldn’t be so many damn stats). So while Yasiel Puig is listed first in the table you’re about to read, I can’t tell you what that actually means for his long-term baseball success. I can only promise he will not be elected president of the United States.

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