Here is the ETF Professor's ETF Watch List for Friday January 18, 2013.

Earnings play: Industrial Select Sector SPDR (XLI).

Commodities play: iPath DJ-UBS Cotton TR Sub-Index ETN (BAL).

Keep an eye on the U.S. Oil Fund (USO).

The Market Vectors Retail ETF (RTH) is worth a look.

Emerging markets plays of the day: Guggenheim China Small Cap ETF (HAO), Direxion Daily China Bull 3X Shares (YINN) and the Market Vectors Brazil Small Cap ETF (BRF).

Forex play of the day: CurrencyShares Australian Dollar Trust (FXA).

Bond play of the day: iShares JPMorgan USD Emerg Markets Bond ETF (EMB).

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