The word grandstander is playable in Words With Friends™, no blanks required. Because it is longer than 7 letters, you would have to play off an existing word or do it in several moves.
Words With Friends™ Letter Score: 18
Highest Scoring Words With Friends™ Plays In The Letters
Seven Letter Word Alert: (42 words)
agendas, andante, argents, arrange, danders, dangers, darners, darters, dastard, dragnet, eartags, errands, errants, ganders, gardens, garners, garnets, garrets, garters, gnarred, gradate, graders, grandad, grander, granted, granter, graters, narrate, rangers, ranters, redrags, regards, regnant, regrant, retards, stander, starred, strange, tanager, tanners, teargas, traders