The Giants signed 20 year old Cuban right-hander Reinier Roibal in April. He throws in the mid-90′s and is regarded as top Cuban pitching prospect. No word yet on what the Giants paid to sign him.
Rainier may be more talented than Aroldis Chapman. He pitched very well for the Santiago de Cuba Avispas..
Reinier is currently playing with the Giants in the Arizona Rookie League. He has pitched in eight games, all of them as a reliever. He has won two and lost none. His ERA is 1.17 and the batters average is .192, so you can say that he is doing well.