"One rival executive proclaimed the Cincinnati Reds and San Francisco Giants should be aggressive buyers," Rosenthal wrote, "saying it's 'open season' on the third NL wild card because of the San Diego Padres' uncertain hold on the position."

The San Diego Padres' trade proposal for Boston Red Sox outfielder Jarren Duran has been halted, but isn't dead.

The Boston Red Sox have needs to address before Thursday's trade deadline. They also have a valuable trade chip in Jarren Duran.