also opening day for major league baseball money b and former baseball all-stars including mike piazzaees player ringing bell today. >>> developing now in a boston area courtroom, the trial just resumed for former nfl star aaron hernandez accused of murder and his lawyers begin presenting their defense today after prosecutors spent more than two months laying out their case. hernandez charged were killing odin lloyd in 2013. lloyd dating the sister of hernandez' fiancee. the latest from nbc's ron allen. ron, good morning. >> reporter: good morning, jose. how are you? >> good. what are we expecting today? >> reporter: we're expecting a very brief defense presentation. the defense is basically maintaining the prosecution hasn't proven their case. largely a circle case. no eyewitness. no murder weapon recovered. and right now on the stand is a expert on matters such as pcp, angel dust drugs. the defense trying to essentially say, there were two other men with hernandez when this happened allegedly, and they're trying to connect them to the crime by bringing on this expert who talks about