diff --git a/doc/data/baseball.csv b/doc/data/baseball.csv
index 546c3ad62637b..aadbaced193a5 100644
--- a/doc/data/baseball.csv
+++ b/doc/data/baseball.csv
@@ -1,4 +1,4 @@
-id,year,stint,team,lg,g,ab,r,h,X2b,X3b,hr,rbi,sb,cs,bb,so,ibb,hbp,sh,sf,gidp
+id,player,year,stint,team,lg,g,ab,r,h,X2b,X3b,hr,rbi,sb,cs,bb,so,ibb,hbp,sh,sf,gidp
 88641,womacto01,2006,2,CHN,NL,19,50,6,14,1,0,1,2.0,1.0,1.0,4,4.0,0.0,0.0,3.0,0.0,0.0
 88643,schilcu01,2006,1,BOS,AL,31,2,0,1,0,0,0,0.0,0.0,0.0,0,1.0,0.0,0.0,0.0,0.0,0.0
 88645,myersmi01,2006,1,NYA,AL,62,0,0,0,0,0,0,0.0,0.0,0.0,0,0.0,0.0,0.0,0.0,0.0,0.0