Matthew Perry's pickleball partner saw 'scary' warning signs during match just hours before his death

Matthew Perry Tribute Special to Air on Nick at Nite

Matthew Perry's final public appearance was in Paris this past summer for French Open ... as he said he'd like 'to be remembered as somebody who lived well, loved well' and 'was a seeker' who sought 'to help people'

Charlie Puth honors Matthew Perry by singing Friends' theme song at concert in Melbourne, Australia