diff --git a/capreolus/benchmark/dl19.py b/capreolus/benchmark/dl19.py
new file mode 100644
index 00000000..c3b36f40
--- /dev/null
+++ b/capreolus/benchmark/dl19.py
@@ -0,0 +1,85 @@
+from capreolus import Dependency, constants
+
+from . import Benchmark, IRDBenchmark, validate
+from capreolus.utils.common import download_file, remove_newline
+from capreolus.utils.trec import topic_to_trectxt, load_trec_topics
+import json
+import os
+from capreolus.utils.loginit import get_logger
+
+logger = get_logger(__name__)
+
+
+PACKAGE_PATH = constants["PACKAGE_PATH"]
+
+
+@Benchmark.register
+class DL19(IRDBenchmark):
+    module_name = "dl19"
+    query_type = "text"
+    ird_dataset_names = ["msmarco-passage/trec-dl-2019", "msmarco-passage/dev/small", "msmarco-passage/train" ]
+    dependencies = [Dependency(key="collection", module="collection", name="msmarcopsg")]
+
+    # File paths are same as MSMarcoPassage
+    data_dir = PACKAGE_PATH / "data" / "msmarcopsg"
+    qrel_file = data_dir / "qrels.txt"
+    topic_file = data_dir / "topics.txt"
+
+
+    fold_file = PACKAGE_PATH / "data" / "dl19_folds.json"
+
+    @validate
+    def build(self):
+        self.generate_folds()
+    
+    def generate_folds(self):
+
+        def match_size(fn):
+            # return True if the file is from training set, or the small version of dev and test set
+            return (".train." in fn) or (".small." in fn)
+
+
+        # topic and qrel
+        folds = {"train": set(), "dev": set(), "eval": set()}
+
+        # Add the DL19 qids (from test set)
+        for qid in self.qrels.keys():
+            folds['eval'].add(qid)
+
+        self.data_dir.mkdir(exist_ok=True, parents=True)
+        if all([f.exists() for f in [self.qrel_file, self.topic_file, self.fold_file]]):
+            return
+
+        gz_dir = self.collection.download_raw()
+        queries_fn = [fn for fn in os.listdir(gz_dir) if "queries." in fn and match_size(fn)]
+        qrels_fn = [fn for fn in os.listdir(gz_dir) if "qrels." in fn and match_size(fn)]  # note that qrel.test is not given
+
+        # topic and qrel
+        topic_f, qrel_f = open(self.topic_file, "w"), open(self.qrel_file, "w")
+
+        for set_name in ["train", "dev"]:
+            cur_queriesfn = [fn for fn in queries_fn if f".{set_name}." in fn]
+            cur_qrelfn = [fn for fn in qrels_fn if f".{set_name}." in fn]
+            with open(gz_dir / cur_queriesfn[0], "r") as f:
+                for line in f:
+                    qid, query = line.strip().split("\t")
+                    topic_f.write(topic_to_trectxt(qid, query))
+                    folds[set_name].add(qid)
+
+            if not cur_qrelfn:
+                logger.warning(
+                    f"{set_name} qrel is unfound. This is expected if it is eval set. "
+                    f"This is unexpected if it is train or dev set."
+                )
+                continue
+
+            with open(gz_dir / cur_qrelfn[0], "r") as f:
+                for line in f:
+                    qrel_f.write(line)
+
+
+        # fold
+        folds = {k: list(v) for k, v in folds.items()}
+        folds = {"s1": {"train_qids": folds["train"], "predict": {"dev": folds["dev"], "test": folds["eval"]}}}
+        json.dump(folds, open(self.fold_file, "w"))
+