Porcello is by no means bad. He had a 3.91FIP, 3.89xFIP and 4.00 SIERA last year. Every year of his career his FIP,xFIP and SIERA have gotten better. His velocity picked up last year as well. The only reason his ERA looks so bad is that he induces a ton of ground balls and his infield defense is absolutely wretched. Put him on a team with good infield defense and he's a good pitcher. As far s Rondon goes, he's ready to be a closer this year and hits 100MPH.