master vs masters

Some examples from the web:

• My dancing master was from Braavos.
• Nobody meets the master until after class.
• The master says they are untested.
• - Perhaps until the master returns.
• - Humble apologies, master Shredder.
• Then your master has a problem.
• Here comes the powerful kung-fu master.
• Mind your place, dancing master.
• Our plan has gone undiscovered, master.
• My master doesn't believe fighting can prove anything.
• My master sees something in you.
• A dog refusing to betray his master.
• Your master commands you to step forward.
• And now my master's coming home...
• Probably because I spent so many years serving its master.
• Edgerton's a master at tactics.
• The Australian is nothing without its master.
• The fencing master has met his equal.
• My master has greater concerns Requiring his attentions.
• It is because my master is smart.

Some examples from the web:

• People who were trying to fight your masters.
• Familiars and their masters - we can communicate telepathically.
• - I applied to Cambridge for my masters.
• I've given you eight child pornographers, three botnet masters...
• Five tough kung-fu masters suddenly appeared.
• The Qing Court sent martial art masters...
• Let the downtrodden cringe from the lash of their masters.
• Grander than their masters and touchy as a king in exile.
• And you prey on the weakness of your masters.
• And you prey on the weakness of your masters.
• You guys are the masters of disguise.
• You guys are the masters of disguise.
• Washi is the paper traditionally used by the masters.
• And the lives of your wise masters.
• There are no masters in the grave, Your Grace.
• There's some great cameo voices for those masters.
• We need to become the masters of our own destiny.
• I'll learn how to build from the Italian masters.
• It's a law enforced to stop peasants from leaving their masters.
• They are lapdogs to their corporate masters.