Sanspo reports that Ryota Igarashi topped out at 158km/h while playing winter ball in the Dominican Republic. They are also reporting that he still has not received any offers from MLB teams.
"Igarahi has returned to the US and is continuing his training," said someone close to the situation. "I was surprised to hear that he hit 158km/h, but I have heard that he has made improvements. ... It does not appear as though he has received any offers from MLB teams so far."