In OCCA case No. F-2017-849, Samuel Cosby appealed his conviction for assault and battery with a deadly weapon. In an unpublished decision, the court decided to affirm his conviction. One judge dissented. Samuel Cosby was found guilty by a jury in Oklahoma County and sentenced to life imprisonment. He raised several arguments to claim that errors during the trial affected his right to a fair trial. First, Mr. Cosby argued that the trial court made a mistake by not having a pretrial hearing to check if the expert testimony about firearms was reliable. The court found no error in allowing the expert testimony because it is generally accepted in trials. Second, he claimed the firearms expert's analysis was flawed and unfair. However, the court decided that there was no plain error since the expert's opinion was based on accepted methods. Third, he argued that a phone call he made from jail should not have been used as evidence. While he objected in court, the judges felt the phone call was relevant because it showed he was aware of the situation. Fourth, Mr. Cosby said there were mistakes in how evidence was handled, particularly about the victim's injuries. The court ruled that the evidence was necessary for proving the case. Fifth, he felt the jury instructions were wrong because his request for an explanation about inconsistent statements was denied. The court explained that the victim's testimony was not inconsistent enough to require such an instruction. Lastly, Mr. Cosby claimed he did not receive effective help from his lawyer. The court found that since these errors did not actually happen, this claim was also not valid. The overall decision was that the judgment and sentence against Mr. Cosby were correct, and his appeals did not show any significant errors that affected the fairness of his trial.