CHI

• ___ Omega (major sorority)

• ___ Sox

• ___-square

• ___-square (odds calculation)

• ___-square (statistics calculation)

• ___-square distribution (probability function)

• ___-square test

• ___-square test, in statistics

• ___-Town

• ___-Town (Cubbies' home)

• ___-town (hotdog)

• ___-Town (Midwest hub nickname)

• ___-Town (Midwest hub)

• ___-town (the Windy City)

• '70s group The ___-Lites

• 1970s soul group The ___-Lites

• 2010-11 MVP Rose's city

• 22nd Greek letter

• 22nd letter in Greece

• 22nd letter of the Greek alphabet

• 50% of a famous name in golf

• A.L. and N.L. city

• A.L. and N.L. city: Abbr.

• A.L. or N.L. Central city

• A.L. or N.L. city

• A.L. or N.L. city, in brief

• Actor McBride

• Actor McBride of Pushing Daisies

• Actor McBride of The Nine

• Acupuncture force

• Acupuncture life force

• Acupuncturist's concern

• Acupuncturist's energy

• Acupuncturist's life force

• Acupuncturist's vital life force

• AL or NL team

• AL or NL team, briefly

• Ancient Chinese dynasty

• Ancient spot marker?

• Ancient X

• Antepenultimate Greek letter

• Antepenultimate letter

• Antepenultimate letter in the Greek alphabet

• Athenian's X

• Bears' home, briefly

• Bears' town, for short

• Between phi and psi

• Between xi and eta

• Bulls' home, for short

• Bulls' town: Abbr.

• Campus letter

• Certain Greek letter

• Christogram part

• City on Lake Mich.

• City that's home to the jocks of this puzzle's theme, for short

• City with both A.L. and N.L. teams, informally

• Corinth consonant

• Cub's home, for short

• Cubs, on scoreboards

• Curious George, for one

• Delta Tau ___ (Animal House house)

• Det. football rival

• Eastern energy

• Ebert's city, for short

• Energy, in feng shui

• Existential life force

• Figure on many a college shirt

• Flow of life

• Force in acupuncture

• Frat letter

• Frat X

• Fraternity letter

• Fraternity member?

• Fraternity X

• Greek alphabet letter

• Greek antepenultimate

• Greek consonant

• Greek letter

• Greek letter after phi

• Greek X

• Half a famous first name in golf

• Half a famous golf name

• Half of Rodriguez's name

• Hellenic X

• Ho ___ Minh

• Ho ___ Minh City

• Ho-Minh middle

• Home for AL's Sox

• Home for Bulls and Bears, for short

• Home of Bulls and Bears (abbr.)

• Home of the Bears and the Bulls: Abbr.

• Home of the Bulls and the Bears: Abbr.

• Home of the Cubs and Bears: Abbr.

• Home of two M.L.B. teams

• I, Robot actor McBride

• If doubled, it's ultrasmart

• IL metropolis

• Ill. city

• Illinois city, for short

• It comes between phi and psi

• It marks the spot in Sparta

• It's part of Xmas

• Its symbol is X

• Japanese kana character

• Lake Mich. city

• Letter after phi

• Letter before psi

• Letter between phi and psi

• Letter from Crete

• Letter from Greece

• Letter in some sororities

• Life energy, in the East

• Life force

• Life force, in acupuncture

• Life force, in Eastern philosophy

• Life force, in feng shui

• Life force, to an acupuncturist

• Likely 2008 playoff team in both the American and National leagues, on the scoreboard

• Little city in Greece.

• Loop setting, briefly

• Mandarin word for breath

• McBride in Gone in 60 Seconds

• McBride in Narc

• McBride of Boston Public

• McBride of The Nine

• Middle name of Vietnam's Ho

• Midwest city that is host to the annual Pitchfork Music Fesitval: Abbr.

• Midwest city, familiarly

• Midwest city, on scoreboards

• Midwest city, slangily

• N.L. Central team

• NBA city

• Nelson Algren's city, for short

• New toy sensation Poo-

• NFC North team

• NL or AL abbr.

• Onassis' X

• ORD is its airport

• Penultimate Greek consonant

• Phi follower

• Phi-psi separator

• Psi preceder

• Rep. Bobby L. Rush's hometown, familiarly

• Scoreboard letters for Da Bears

• Sigma ___

• Sigma ___ (frat of songdom)

• Sigma follower

• Sigma's sweetheart

• Singer Coltrane

• Sorority letter

• Sosa's town, familiarly

• Sox city

• Sox city, briefly

• Sox home, for short

• Sox home, on scoreboards

• Sox lead-in

• Sox town, for short

• Sox, on scoreboards

• Sweetheart of Sigma ___

• T'ai ___

• T'ai ___ ch'uan

• Tai ___ (exercise method)

• Tai ___ (martial art)

• Tai ___ (meditative martial art)

• Taoist's life force

• That toddling town briefly

• The ___-Lites (Oh Girl group)

• The Bears, on scoreboards

• The Cubs, on scoreboards

• The Sox, on the scoreboard

• The Sweetheart of Sigma ___

• The Sweetheart of Sigma ___ (1912 song)

• The White Sox, briefly

• The Windy City briefly,

• The Windy City, for short

• The Windy City, informally

• The X in Xmas, originally

• Third-to-last Greek letter

• Trib's home

• Twenty-second letter of the Greek alphabet

• Vital force in Chinese medicine

• Vital force in traditional Chinese medicine

• Vital life force

• Vital life force, in acupuncture

• When repeated, overly stylish

• When repeated, pretentious

• Where they read the Trib

• Where to find Bulls and Bears, briefly

• White Sox bailiwick

• White Sox city, for short

• White Sox city, on scoreboards

• Windy City

• Windy City, breezily

• Windy City, briefly

• Windy City, for short

• Wrigley Field scoreboard abbr.

• X as in Xenophon

• X for Xenophon

• X in Athens

• X look-alike

• X, in ancient Greece

• X, in old Greece

• X, in old Rome

• X, on campuses

• X, to frat men

• X, to Greeks

• X, to Hippocrates

• X, to Xanthippe

• X, to Xenophon

• Xanthippe's X

• Xenophon's X

• The 22nd letter of the Greek alphabet