Flyers' Kevin Hayes out six to eight weeks after abdominal surgery <div align='center'><blockquote class='twitter-tweet' data-lang='en'><a href='https://twitter.com/NHLFlyers/status/1440347562901323778?s=20'> </a></blockquote></div> <div align='center'><blockquote class='twitter-tweet' data-lang='en'><a href='https://twitter.com/frank_seravalli/status/1440345433428017152?s=20'> </a></blockquote></div>